[3.16] Add ClientCapabilities missing fields

[ericdallo]

SPEC

• workspace.semanticTokens
• workspace.codeLens
• workspace.fileOperations
• window.showMessage
• window.showDocument
• general
• textDocument.linkedEditingRange?
• textDocument.callHierarchy?
• textDocument.semanticTokens?
• textDocument.moniker?

Also, there are fields not introduced on LSP 3.16 that we are not compliant with:

• didChangeConfiguration
• didChangeWatchedFiles