improve docs of compiler APIs

hi,

i'm trying to implement an instrumenter on top of typescript compiler APIs.
i cannot find a "real" documentation beside of this wiki page but i think that it should be upgraded from a single wiki page to a dedicated section with examples for:

• creating new nodes (e.g. create a brand new statement and attach it to an existing function body)
• updating existing nodes (e.g. patching a statement)
• add types declarations (e.g. add arbitrary types to a function declaration)
• todo...

what do you think about this?

EDIT: i've found this nice article that shows some really useful code.
EDIT: i've found this nice project that can help to understand how to use the compiler apis for more advanced use cases.

既存の “Using the Compiler API” wiki ページから始め、リンクされている Scott Logic の記事および ts-simple-ast プロジェクトと比較します。ノードの作成と更新、型宣言の追加の例を含む、Compiler API 専用ドキュメントセクションの範囲を定義します。合意した API のトピックが利用可能な例とともに文書化されれば完了です。