Chore: Use synchronize option to sync settings

Though this option is marked as deprecated, we can't fully embrach the recommended pull-model for syncing configuration
as the logger's logging level can't be synced in the same way like others. It needs to be updated immediately
instead of being fetched from the client when needed.
More info: https://code.visualstudio.com/api/language-extensions/language-server-extension-guide#explaining-the-language-server

client/src/language/languageClient.ts

@@ -6,7 +6,6 @@
 import * as path from 'path'
 
 import {
-  workspace,
   type ExtensionContext,
   window,
   languages,
@@ -49,22 +48,14 @@ export async function activateLanguageServer (context: ExtensionContext, bitBake
     debug: { module: serverModule, transport: TransportKind.ipc, options: debugOptions }
   }
 
-  const sendSettings = async (): Promise<void> => {
-    const settings = workspace.getConfiguration()
-    try {
-      await client.sendNotification('workspace/didChangeConfiguration', { settings })
-    } catch (error) {
-      logger.error('Failed to send settings to language server: ' + String(error))
-    }
-  }
-
-  workspace.onDidChangeConfiguration(sendSettings)
-
   // Options to control the language client
   const clientOptions: LanguageClientOptions = {
     // Register the server for bitbake documents
-    // TODO: check new documentSelector
     documentSelector: [{ scheme: 'file', language: 'bitbake' }],
+    // TODO: Use the new pull-model for configuration settings
+    synchronize: {
+      configurationSection: 'bitbake'
+    },
     middleware: {
       provideCompletionItem: middlewareProvideCompletion,
       provideDefinition: middlewareProvideDefinition,
@@ -146,7 +137,6 @@ export async function activateLanguageServer (context: ExtensionContext, bitBake
 
   // Start the client and launch the server
   await client.start()
-  await sendSettings()
 
   return client
 }