Display and UI implementation (#169)

* Menu app. Lib: add mlib submodule.

* Menu: new startup lib dependency definition

* Menu: hierarchy in menu. Cube: fix heap1/4 inconsistency, stack protection.

* GUI: rendering pipeline initial version.

* GUI: layered widget composing, FURI record. Menu: FURI record, api.

* GUI: input dispatching. Menu: switch to input from GUI.

* GUI, MENU: code style cleanup, fix type conversion warnings.

* GUI, Menu: syntax check.

* Makefile: check and reinit submodules, format.

* Menu: lock on event processing. Makefile: proper submodule initialization.

* Menu: fix stack corruption by queue.

* GUI: refactor.

* Makefile: format rule fix, st-util pid.

* GUI, Menu, FURI: format with clang-format.

* GUI, MENU: locks in critical sections, fix stack corruption, ready signaling.

* Makefile: clang format rule cleanup.

* GUI,MENU: migrate to new API.

* Applications: PRODUCTION_HW variable, skip drivers build on local target.

* refactor production build

* add git to dockerfile

* GUI: uncomment lock block

Co-authored-by: Aleksandr Kutuzov <aku@plooks.com>

firmware/targets/f2/Src/stm32l4xx_it.c

@@ -86,7 +86,9 @@ void NMI_Handler(void)
 void HardFault_Handler(void)
 {
   /* USER CODE BEGIN HardFault_IRQn 0 */
-
+  if ((*(volatile uint32_t *)CoreDebug_BASE) & (1 << 0)) {
+    __asm("bkpt 1");
+  }
   /* USER CODE END HardFault_IRQn 0 */
   while (1)
   {