MM-8708 Remove api package (#8784)

* Remove api package

* Remove api dependency from cmd package

* Remove EnableAPIv3 setting

* Update web tests

* Add more websocket tests

* Move some ws and oauth tests to api4 package

* Move command tests into api4 package

* Test fixes

* Fix msg command test

* Add some app file tests

api4/apitestlib.go

@@ -120,7 +120,7 @@ func setupTestHelper(enterprise bool) *TestHelper {
 	}
 
 	th.App.UpdateConfig(func(cfg *model.Config) { *cfg.ServiceSettings.ListenAddress = prevListenAddress })
-	Init(th.App, th.App.Srv.Router, true)
+	Init(th.App, th.App.Srv.Router)
 	web.NewWeb(th.App, th.App.Srv.Router)
 	wsapi.Init(th.App, th.App.Srv.WebSocketRouter)
 	th.App.Srv.Store.MarkSystemRanUnitTests()