Backoff Reconnect (#6358)

* Add a Stop command that does a bit of cleanup in the engineStateMachine

* Major network code startup refactor; backoff reconnect; many more logs for us

* Save camera state after every user interaction in case of disconnection and restoral

* Translate basic WebSocket error numbers into useful text

* Add a RestartRequest event to the engineCommandManager

* Adjust for a rebase

* Add E2E test for stream pause behavior

* Fix snapshot test

* fmt, lint

* small issue

* Fix tests

* Fix up idle test

* One last fix

* fixes

* Remove circ dep

* fix test

* use a const for time

* TEST -> isPlaywright instead

* whoops

src/lib/singletons.ts

@@ -74,6 +74,7 @@ editorManager.kclManager = kclManager
 // TODO: proper dependency injection.
 engineCommandManager.kclManager = kclManager
 engineCommandManager.codeManager = codeManager
+engineCommandManager.sceneInfra = sceneInfra
 engineCommandManager.rustContext = rustContext
 
 kclManager.sceneInfraBaseUnitMultiplierSetter = (unit: BaseUnit) => {