Example hello-world contract (#120)

* store: Improve querying by using solana 1.8 return_data

* Regenerate anchor-go bindings

* store: Add accessors for querying over CPI

* Start working on a hello-world example

* Fix tests by using the new query format

* Add a e2e test that tests hello-world with the store contract

contracts/crates/arrayvec/src/lib.rs

@@ -1,4 +1,4 @@
-//! This is a tiny arrayvec implementation (https://docs.rs/arrayvec/) that efficiently implements a few common operations
+//! This is a tiny arrayvec implementation <https://docs.rs/arrayvec/> that efficiently implements a few common operations
 //! We're able to simplify the code significantly due to the elements being Pod/Zeroable.
 
 // use anchor_lang::prelude::*;

contracts/examples/hello-world/.gitignore

@@ -0,0 +1,6 @@
+
+.anchor
+.DS_Store
+target
+**/*.rs.bk
+node_modules

contracts/examples/hello-world/Anchor.toml

@@ -0,0 +1,21 @@
+[programs.localnet]
+hello_world = "Fg6PaFpoGXkYsidMpWTK6W2BeZ7FEfcYkg476zPFsLnS"
+
+[registry]
+url = "https://anchor.projectserum.com"
+
+[provider]
+cluster = "localnet"
+# wallet = "~/.config/solana/id.json"
+wallet = "../../id.json"
+
+[scripts]
+test = "yarn run ts-mocha -p ./tsconfig.json -t 1000000 tests/**/*.ts"
+
+[[test.genesis]]
+address = "A7Jh2nb1hZHwqEofm4N8SXbKTj82rx7KUfjParQXUyMQ"
+program = "../../target/deploy/store.so"
+
+[[test.genesis]]
+address = "2F5NEkMnCRkmahEAcQfTQcZv1xtGgrWFfjENtTwHLuKg"
+program = "../../target/deploy/access_controller.so"