feat: allow android apps with any name, fix android + windows for aarch64 target

[jkelleyrtp]

Enables android apps with any name, not just apps with a fixed name.
Does this by hardcoding the dioxus library itself and then importing ourselves into the main app.
Also now uses the bundle_identifier from the dioxus.toml instead of hardcoding things to com.dioxuslabs

---

For posterity, here's some code to use llvm-objcopy to rename the symbols we care about

    #[allow(dead_code)]
    async fn android_objcopy_rename(&self, source: &Path, destination: &Path) -> Result<()> {
        // gathered by `nm -g target/debug/android-final | grep dev_dioxus_main`
        let known_symbols = vec![
            "Java_dev_dioxus_main_Ipc_ipc",
            "Java_dev_dioxus_main_RustWebChromeClient_handleReceivedTitle",
            "Java_dev_dioxus_main_RustWebViewClient_assetLoaderDomain",
            "Java_dev_dioxus_main_RustWebViewClient_handleRequest",
            "Java_dev_dioxus_main_RustWebViewClient_onPageLoaded",
            "Java_dev_dioxus_main_RustWebViewClient_onPageLoading",
            "Java_dev_dioxus_main_RustWebViewClient_shouldOverride",
            "Java_dev_dioxus_main_RustWebViewClient_withAssetLoader",
            "Java_dev_dioxus_main_RustWebView_onEval",
            "Java_dev_dioxus_main_RustWebView_shouldOverride",
            "Java_dev_dioxus_main_WryActivity_create",
            "Java_dev_dioxus_main_WryActivity_destroy",
            "Java_dev_dioxus_main_WryActivity_focus",
            "Java_dev_dioxus_main_WryActivity_memory",
            "Java_dev_dioxus_main_WryActivity_pause",
            "Java_dev_dioxus_main_WryActivity_resume",
            "Java_dev_dioxus_main_WryActivity_save",
            "Java_dev_dioxus_main_WryActivity_start",
            "Java_dev_dioxus_main_WryActivity_stop",
        ];

        tracing::debug!(
            "Redefining symbols for Android linker. Source: {source:#?}, target: {destination:#?}"
        );

        // --redefine-sym=Java_dev_dioxuslabs_hardcoded_WryActivity_create=Java_com_example_DIOXUSLABS_WryActivity_create
        let redefined_org = self.build.krate.mobile_org().replace('.', '_');
        let app_name = self.build.krate.mobile_app_name();

        let res = Command::new(self.build.krate.android_llvm_objcopy().unwrap())
            .args(known_symbols.iter().map(|incoming| {
                let replaced =
                    incoming.replace("dev_dioxus_main", &format!("{redefined_org}_{app_name}"));
                let redefined = format!("--redefine-sym={incoming}={replaced}",);
                tracing::trace!("redefining symbol {incoming} to {redefined}");
                redefined
            }))
            .arg(source)
            .arg(destination)
            .stdout(std::process::Stdio::piped())
            .stderr(std::process::Stdio::piped())
            .output()
            .await?;

        if !res.stderr.is_empty() {
            tracing::error!(
                "error running llvm-objcopy {:#?}",
                str::from_utf8(&res.stderr)
            );
        }

        Ok(())
    }

    pub(crate) fn android_llvm_objcopy(&self) -> Option<PathBuf> {
        self.android_ndk().map(|ndk| {
            let toolchain_dir = ndk.join("toolchains").join("llvm").join("prebuilt");

            if cfg!(target_os = "macos") {
                // for whatever reason, even on aarch64 macos, the linker is under darwin-x86_64
                return toolchain_dir
                    .join("darwin-x86_64")
                    .join("bin")
                    .join("llvm-objcopy");
            }

            if cfg!(target_os = "windows") {
                return toolchain_dir
                    .join("windows-x86_64")
                    .join("bin")
                    .join("llvm-objcopy.cmd");
            }

            if cfg!(target_os = "linux") {
                return toolchain_dir
                    .join("linux-x86_64")
                    .join("bin")
                    .join("llvm-objcopy");
            }

            panic!("unsupported target os");
        })
    }

and the shell script that inspired it

# /Users/jonkelley/Development/Tinkering/mobile-testing/androidfinal/target/aarch64-linux-android/dioxus-android/androidfinal
    # --redefine-sym=old=new

/Users/jonkelley/Library/Android/sdk/ndk/25.2.9519653/toolchains/llvm/prebuilt/darwin-x86_64/bin/llvm-objcopy \
    --redefine-sym=Java_com_example_androidfinal_WryActivity_create=Java_com_example_DIOXUSLABS_WryActivity_create \
    /Users/jonkelley/Development/Tinkering/mobile-testing/androidfinal/target/aarch64-linux-android/dioxus-android/androidfinal \
    /Users/jonkelley/Development/Tinkering/mobile-testing/androidfinal/target/aarch64-linux-android/dioxus-android/androidfinal2

nm /Users/jonkelley/Development/Tinkering/mobile-testing/androidfinal/target/aarch64-linux-android/dioxus-android/androidfinal2 | grep com_

# 00000000006ff16c T Java_com_example_androidfinal_WryActivity_create
# 00000000006ff128 T Java_com_example_androidfinal_Ipc_ipc
# 00000000006ff124 T Java_com_example_androidfinal_RustWebChromeClient_handleReceivedTitle
# 00000000006ff140 T Java_com_example_androidfinal_RustWebViewClient_assetLoaderDomain
# 00000000006ff148 T Java_com_example_androidfinal_RustWebViewClient_handleRequest
# 00000000006ff12c T Java_com_example_androidfinal_RustWebViewClient_onPageLoaded
# 00000000006ff130 T Java_com_example_androidfinal_RustWebViewClient_onPageLoading
# 00000000006ff13c T Java_com_example_androidfinal_RustWebViewClient_shouldOverride
# 00000000006ff144 T Java_com_example_androidfinal_RustWebViewClient_withAssetLoader
# 00000000006ff134 T Java_com_example_androidfinal_RustWebView_onEval
# 00000000006ff138 T Java_com_example_androidfinal_RustWebView_shouldOverride
# 00000000006ff154 T Java_com_example_androidfinal_WryActivity_destroy
# 00000000006ff14c T Java_com_example_androidfinal_WryActivity_focus
# 00000000006ff150 T Java_com_example_androidfinal_WryActivity_memory
# 00000000006ff15c T Java_com_example_androidfinal_WryActivity_pause
# 00000000006ff160 T Java_com_example_androidfinal_WryActivity_resume
# 00000000006ff158 T Java_com_example_androidfinal_WryActivity_save
# 00000000006ff168 T Java_com_example_androidfinal_WryActivity_start
# 00000000006ff164 T Java_com_example_androidfinal_WryActivity_stop

#   --redefine-sym=old=new  Change the name of a symbol old to new
#   --redefine-syms=filename
#                           Reads a list of symbol pairs from <filename> and runs as if --redefine-sym=<old>=<new> is set for each one. <filename> contains two symbols per line separated with whitespace and may contain comments beginning with '#'. Leading and trailing whitespace is stripped from each line. May be repeated to read symbols from many files.