Add code-server version to product configuration

Before 1.64 the entire product configuration was sent to the client but
that was removed so we have to add anything we want to use on the
client, like the code-server version (used in the about dialog).

Fixes coder#5027.

Author: code-asher

patches/integration.diff

@@ -257,3 +257,15 @@ Index: code-server/lib/vscode/src/vs/code/browser/workbench/workbench.html
  		<link rel="manifest" href="/manifest.json" crossorigin="use-credentials" />
  		<link data-name="vs/workbench/workbench.web.main" rel="stylesheet" href="./static/out/vs/workbench/workbench.web.main.css">
 
+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
+@@ -274,6 +274,7 @@ export class WebClientServer {
+ 		} : undefined;
+ 		const data = (await util.promisify(fs.readFile)(filePath)).toString()
+ 			.replace('{{WORKBENCH_WEB_CONFIGURATION}}', escapeAttribute(JSON.stringify({
++				codeServerVersion: this._productService.codeServerVersion,
+ 				remoteAuthority,
+ 				_wrapWebWorkerExtHostInIframe,
+ 				developmentOptions: { enableSmokeTestDriver: this._environmentService.driverHandle === 'web' ? true : undefined },