Add showDeprecated option to suggest, filters out deprecated options

[nrayburn-tech]

Adds an option to showDeprecated in the suggest list. When false, deprecated items are not shown. Defaults to true, same as old behavior.

Changes were mostly done by following the showConstructors option.

Example

This PR fixes #77239.

[nrayburn-tech]

I wasn't sure if suggestOptions.showDeprecated should be added here or not.

vscode/src/vs/editor/contrib/suggest/suggestModel.ts

Line 520 in b55b12f

if (!suggestOptions.showFields) { result.add(CompletionItemKind.Field); }

Deprecated also isn't in CompletionItemKind, and would have to be added. Also wasn't sure about that.

[jrieken]

I wasn't sure if suggestOptions.showDeprecated should be added here or not.

That would be the better place because filtering for deprecated needs to happen only once (not repeatedly as the user types). Tho, I would not add this as CompletionItemKind but as separate option to CompletionOptions.

[nrayburn-tech]

@jrieken I believe the new changes are what you are asking for.

[jrieken]

Looking good