Suggest interpolated `number`, `string` and `bigint` types in TypeScript template literals

Currently, if you create a variable of an interpolated string type using either number, string or bigint inside you'll get no suggestion for it:

I think it would be more helpful to provide suggestions for those types of strings, having no apparent reason not to. Especially considering the type annotation could be a generic type, in which case you'd have to hover over the variable in order to be aware of the possible values.

issue #57545 で説明されている補間文字列型の例を再現し、number、string、bigint、またはジェネリック型を含むテンプレートリテラルに対して TypeScript がどのように候補を生成するかを調査します。ユーザーが変数にカーソルを合わせなくても、これらの補間型に有用な候補が表示されれば完了です。