remote projects per user (#10594)

Release Notes:

- Made remote projects per-user instead of per-channel. If you'd like to
be part of the remote development alpha, please email hi@zed.dev.

---------

Co-authored-by: Bennet Bo Fenner <53836821+bennetbo@users.noreply.github.com>
Co-authored-by: Bennet <bennetbo@gmx.de>
Co-authored-by: Nate Butler <1714999+iamnbutler@users.noreply.github.com>
Co-authored-by: Nate Butler <iamnbutler@gmail.com>

script/zed-local

@@ -42,6 +42,7 @@ let instanceCount = 1;
 let isReleaseMode = false;
 let isTop = false;
 let othersOnStable = false;
+let isStateful = false;
 
 const args = process.argv.slice(2);
 while (args.length > 0) {
@@ -52,6 +53,8 @@ while (args.length > 0) {
     instanceCount = parseInt(digitMatch[1]);
   } else if (arg === "--release") {
     isReleaseMode = true;
+  } else if (arg == "--stateful") {
+    isStateful = true;
   } else if (arg === "--top") {
     isTop = true;
   } else if (arg === "--help") {
@@ -147,7 +150,7 @@ setTimeout(() => {
       env: {
         ZED_IMPERSONATE: users[i],
         ZED_WINDOW_POSITION: position,
-        ZED_STATELESS: "1",
+        ZED_STATELESS: isStateful && i == 0 ? "1" : "",
         ZED_ALWAYS_ACTIVE: "1",
         ZED_SERVER_URL: "http://localhost:3000",
         ZED_RPC_URL: "http://localhost:8080/rpc",