[JavaScript/TypeScript Language Hints] Hide default `Function` properties/methods until manually typed just like in Rust.

Nobody has claimed this yet.

Right now if I create a class with static methods/properties or via namespace, it's very hard to distinguish between default and custom ones visually.

I propose to hide those **default** methods, they are not useful to know for beginners, while for experienced ones, it's noisy. Leaving only defined in classes/namespaces.
I'm looking from Rust lang analyzer extension perspective, which does exactly that, and I feel like it's much more convenient, especially if there will be more properties/methods in future.
If the property is fully typed correctly, e.g. `Test.call`, the hint will appear just like typing `Test.constructor`, it's not appearing, but when typed - the hint appears with `Function`.

This can be an option to enable/disable.

Start by reproducing the class and namespace completion examples described in the issue, then compare the current TypeScript language hints with the Rust analyzer behavior. Done means default Function members are hidden until explicitly typed, while custom members remain visible and an enable/disable option is considered.

Written by the indexing model from the issue text.