[Feature Request] Add documentSelector to MonacoLspClient

[tamayika]

Context

• This issue is not a bug report. (please use a different template for reporting a bug)
• This issue is not a duplicate of an existing issue. (please use the search to find existing issues)

Description

MonacoLspClient does not support documentSelector(like https://code.visualstudio.com/api/references/vscode-api#DocumentSelector).
This results that all models in monaco editor is synchronized by LSP and sends unnecessary change events to LSP servers.

Monaco Editor Playground Link

N/A

Monaco Editor Playground Code

N/A