.devcontainer: Add clangd.

.devcontainer/Dockerfile

@@ -23,5 +23,5 @@ RUN curl -fSsL -o /usr/local/bin/bazelisk https://github.com/bazelbuild/bazelisk
 
 # [Optional] Uncomment this section to install additional OS packages.
 RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \
-    && apt-get -y install --no-install-recommends gettext clang gcc bzip2 libx11-dev libxext-dev libxrandr-dev libxrender-dev libgl-dev libglu-dev libasound-dev libalsaplayer-dev patch \
+    && apt-get -y install --no-install-recommends gettext clang gcc bzip2 libx11-dev libxext-dev libxrandr-dev libxrender-dev libgl-dev libglu-dev libasound-dev libalsaplayer-dev patch clangd \
     && apt-get -y install --no-install-recommends libsdl1.2-dev libsdl-gfx1.2-dev libgmp3-dev autoconf automake libgl1-mesa-dev libglu1-mesa-dev

.devcontainer/devcontainer.json

@@ -12,18 +12,20 @@
 	"customizations": {
 		"vscode": {
 			// Set *default* container specific settings.json values on container create.
-			"settings": {},
+			"settings": {
+				"bazel.executable": "bazelisk"
+			},
 			// Add the IDs of extensions you want installed when the container is created.
 			"extensions": [
-				"devondcarew.bazel-code",
-				"BazelBuild.vscode-bazel"
+				"BazelBuild.vscode-bazel",
+				"StackBuild.bazel-stack-vscode"
 			]
 		}
 	},
 	// Use 'forwardPorts' to make a list of ports inside the container available locally.
 	// "forwardPorts": [],
 	// Use 'postCreateCommand' to run commands after the container is created.
-	"postCreateCommand": "sudo apt update && sudo apt install --yes gettext clang gcc bzip2 libx11-dev libxext-dev libxrandr-dev libxrender-dev libgl-dev libglu-dev libasound-dev libalsaplayer-dev patch && sudo apt install --yes libsdl1.2-dev libsdl-gfx1.2-dev libgmp3-dev autoconf automake libgl1-mesa-dev libglu1-mesa-dev && git submodule update --init",
+	"postCreateCommand": "sudo apt update && sudo apt install --yes gettext clang gcc bzip2 libx11-dev libxext-dev libxrandr-dev libxrender-dev libgl-dev libglu-dev libasound-dev libalsaplayer-dev patch clangd && sudo apt install --yes libsdl1.2-dev libsdl-gfx1.2-dev libgmp3-dev autoconf automake libgl1-mesa-dev libglu1-mesa-dev && git submodule update --init",
 	// Uncomment when using a ptrace-based debugger like C++, Go, and Rust
 	// "runArgs": [ "--cap-add=SYS_PTRACE", "--security-opt", "seccomp=unconfined" ],
 	// Comment out to connect as root instead. More info: https://aka.ms/vscode-remote/containers/non-root.