parse formatting options in initialization, and pull editor scope during Configuration

[iisaduan]

• PR includes changes that allow VS to be configured:

  • allows clients to pass in preferences in initializationOptions
  • tested didChangeConfiguration to work in both VS and VSCode

• Updates the server's parsing of Configuration and didChangeConfiguration results to be inline with changes in Resolve/merge configuration on the client #2766 and Clean up JS/TS language specific setting settings vscode#292934 / Adopt unified js/ts setting for suggest vscode#295055

• Bugfixes:

  • fixes indenting issue #2444 (comment) and Organize Imports #2331 (comment) where organize imports/formatting was ignoring indentSize = 2.

[Copilot]

Pull request overview

This PR enables the language server to accept formatting options during initialization and updates configuration parsing to support the new js/ts configuration key alongside existing typescript and javascript keys. It also adds support for editor settings to configure formatting preferences.

Changes:

• Added support for receiving formatting options via initializationOptions in the initialization request
• Updated configuration parsing to use a map-based approach with support for js/ts, typescript, javascript, and editor keys
• Fixed numeric type parsing to handle float64 values from JSON (addressing the indenting issue where indentSize = 2 was being ignored)

Reviewed changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
testdata/baselines/reference/fourslash/state/codeLensAcrossProjects.baseline	Updated test baseline to reflect the new js/ts configuration key
internal/project/session_test.go	Updated test calls to use map-based configuration instead of array-based
internal/lsp/server.go	Added initialization options parsing, updated configuration request handling to include editor settings, and simplified didChangeConfiguration handling
internal/lsp/lsproto/lsp_generated.go	Added Typescript field to InitializationOptions struct for receiving formatting preferences
internal/lsp/lsproto/_generate/generate.mts	Added typescript field to custom structures and fixed OrType name parsing
internal/ls/lsutil/userpreferences.go	Added float64 case to handle JSON numeric parsing
internal/ls/lsutil/formatcodeoptions.go	Added ParseEditorSettings method to parse editor-level formatting options
internal/ls/lsutil/configuration.go	Refactored configuration parsing from array-based to map-based approach
internal/fourslash/fourslash.go	Updated test configuration to use js/ts key instead of typescript