feat: extension commands

[devnote-dev]

This PR adds two new commands: restart and disable (and renames the existing one to "lint"). This includes useful window messages with buttons to toggle the extension as a shorthand (see screenshots below). In the process of implementing this, a lot of code was rewritten and updated which should make the extension faster. Closes #12.

[veelenga]

I tested locally, however, on a first run i always receive an exception in the console:

rejected promise not handled within 1 second: Error: Invalid arguments
extensionHostProcess.js:100
stack trace: Error: Invalid arguments
	at new n (/private/var/folders/rt/3thkvgpd4jd0gbr1q_j_f0r00000gn/T/AppTranslocation/14C812DB-71D2-4296-BEF4-89F8CD1D65EF/d/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/api/node/extensionHostProcess.js:94:15017)
	at //vscode-crystal-ameba/out/ameba.js:65:39
	at Array.forEach (<anonymous>)
	at Ameba.<anonymous> (/Users/veelenga/Dev/repos/vscode-crystal-ameba/out/ameba.js:62:35)
	at Generator.next (<anonymous>)
	at //vscode-crystal-ameba/out/ameba.js:7:71
	at new Promise (<anonymous>)
	at __awaiter (//vscode-crystal-ameba/out/ameba.js:3:12)
	at //vscode-crystal-ameba/out/ameba.js:32:88
	at ChildProcess.exithandler (node:child_process:415:5)
	at ChildProcess.emit (node:events:526:28)
	at maybeClose (node:internal/child_process:1092:16)
	at Socket.<anonymous> (node:internal/child_process:451:11)
	at Socket.emit (node:events:526:28)
	at Pipe.<anonymous> (node:net:687:12)
	at Pipe.callbackTrampoline (node:internal/async_hooks:130:17)
extensionHostProcess.js:100

[devnote-dev]

I didn't come across this error during testing, is this from loading a workspace/file or executing a command?

After investigating a bit, it seems to be caused by the display messages with options which return Thenable<string>: they apparently also need a rejection handler (so much for async-await 🙃). Not a big issue though, I can change them to use .then() instead.

[veelenga]

Thank you