External module api (#2290)

* added external module debug view

* integrated module driver into i2c subsystem

* implemented i2c app loader

* added view mirror api

* fixed build

* added i2c to module api

* implemented standalone app touch event

* implemented focus management

* reverted formating change

* refactoring

* refactoring

* implemented events

* fixed memory usage

firmware/application/CMakeLists.txt

@@ -296,6 +296,7 @@ set(CPPSRC
 	apps/ui_debug_max17055.cpp
 	apps/ui_dfu_menu.cpp
 	apps/ui_encoders.cpp
+	apps/ui_external_module_view.cpp
 	apps/ui_fileman.cpp
 	apps/ui_flash_utility.cpp
 	apps/ui_freqman.cpp