Add connection type to web sockets

This allows the backend to distinguish them.  In our case we use them to count a
single "open" of Code so we need to be able to distinguish between web sockets
from two instances and two web sockets used in a single instance.

To test this,
1. Run code-server
2. Open Network tab in Browser DevTools and look for websocket requests
3. You should see the connection type in the request url


Index: code-server/lib/vscode/src/vs/platform/remote/common/remoteAgentConnection.ts
===================================================================
--- code-server.orig/lib/vscode/src/vs/platform/remote/common/remoteAgentConnection.ts
+++ code-server/lib/vscode/src/vs/platform/remote/common/remoteAgentConnection.ts
@@ -231,7 +231,7 @@ async function connectToRemoteExtensionH

 	let socket: ISocket;
 	try {
-		socket = await createSocket(options.logService, options.socketFactory, options.host, options.port, `reconnectionToken=${options.reconnectionToken}&reconnection=${options.reconnectionProtocol ? 'true' : 'false'}`, `renderer-${connectionTypeToString(connectionType)}-${options.reconnectionToken}`, timeoutCancellationToken);
+		socket = await createSocket(options.logService, options.socketFactory, options.host, options.port, `type=${connectionTypeToString(connectionType)}&reconnectionToken=${options.reconnectionToken}&reconnection=${options.reconnectionProtocol ? 'true' : 'false'}`, `renderer-${connectionTypeToString(connectionType)}-${options.reconnectionToken}`, timeoutCancellationToken);
 	} catch (error) {
 		options.logService.error(`${logPrefix} socketFactory.connect() failed or timed out. Error:`);
 		options.logService.error(error);