Add button to relaunch the game alongside reconnect when you lose connection

[Mothblocks]

About The Pull Request

Requested by @MrStonedOne.

.reconnect is not the most reliable thing in the world, and will collapse given any topic call. stylemistake is currently working on fixing the auto-reconnect's (and some others) biggest blunder by changing how ping works, but this is nice as a fallback for when all else fails.

Changelog

🆑
qol: The reconnect button in tgchat will now reopen the game.
/:cl:

[stylemistake]

Ok, an even bigger brain solution:

Byond.winget('', 'url').then((serverUrl) => {
  Byond.call(serverUrl);
  Byond.command('.quit');
});

If you want Byond.winget(null, 'url') support, merge #65943 first.

[Mothblocks]

Per Discord (posting here for posterity), I think we can't use that API since it can sometimes return blank, like during reconnect, so I'm going to bundle it with tgui.html instead? Right? Which path are we taking here?

[stylemistake]

You can do that winget multiple times on interval to keep an up-to-date non-null URL.

[Mothblocks]

Aye 👍

[Mothblocks]

According to MSO, sometimes the port is :0. I'm gonna change the code to detect when we get :0, and keep the old port.

[RikuTheKiller]

This is one godsend of a PR.

[Mothblocks]

TIL: Internet Explorer does not support endsWith

[stylemistake]

It's a polyfill issue, core-js should've filled you in on this