App Loading via Loader (#1)

* app loading wip

* various improvements

irq/isr stuff is now working
lvgl locking where needed
hello world now uses proper mutex for app unlocking
etc?

* various improvements

* cmsis_esp improvements

* implement interrupts

main/src/hello_world/hello_world.h

@@ -1,5 +1,5 @@
 #pragma once
 
-#include "app.h"
+#include "app_manifest.h"
 
-extern const App hello_world_app;
+extern const AppManifest hello_world_app;