Propagate the log level to the client

This can be tested by using `--log trace`.  You should see plenty of debug and
trace logs in the console.

Index: code-server/lib/vscode/src/vs/server/node/webClientServer.ts
===================================================================
--- code-server.orig/lib/vscode/src/vs/server/node/webClientServer.ts
+++ code-server/lib/vscode/src/vs/server/node/webClientServer.ts
@@ -304,7 +304,10 @@ export class WebClientServer {
 			remoteAuthority,
 			webviewEndpoint: vscodeBase + this._staticRoute + '/out/vs/workbench/contrib/webview/browser/pre',
 			_wrapWebWorkerExtHostInIframe,
-			developmentOptions: { enableSmokeTestDriver: this._environmentService.args['enable-smoke-test-driver'] ? true : undefined },
+			developmentOptions: {
+				enableSmokeTestDriver: this._environmentService.args['enable-smoke-test-driver'] ? true : undefined,
+				logLevel: this._logService.getLevel(),
+			},
 			settingsSyncOptions: !this._environmentService.isBuilt && this._environmentService.args['enable-sync'] ? { enabled: true } : undefined,
 			enableWorkspaceTrust: !this._environmentService.args['disable-workspace-trust'],
 			folderUri: resolveWorkspaceURI(this._environmentService.args['default-folder']),