[FL-667] Power saving: deep sleep in tickless state (#300)

* SYSTEM: tickless mode with deep sleep.
* Move FreeRTOS ticks to lptim2.
* API: move all sumbodules init routines to one place.
* Timebase: working lptim2 at tick source.
* API Timebase: lp-timer routines, timer access safe zones prediction and synchronization. 
* FreeRTOS: adjust configuration for tickless mode.
* NFC: support for tickless mode.
* API Timebase: improve tick error handling in IRQ. 
* Apploader: use insomnia mode to run applications.
* BLE: prevent sleep while core2 starting.
* HAL: nap while in insomnia mode.

Co-authored-by: coreglitch <mail@s3f.ru>

firmware/targets/f4/api-hal/api-hal-timebase.h

@@ -0,0 +1,27 @@
+#pragma once
+
+#include <stdint.h>
+
+/* Initialize timebase
+ * Configure and start tick timer
+ */
+void api_hal_timebase_init();
+
+/* Get current insomnia level
+ * @return insomnia level: 0 - no insomnia, >0 - insomnia, bearer count.
+ */
+uint16_t api_hal_timebase_insomnia_level();
+
+/* Enter insomnia mode
+ * Prevents device from going to sleep
+ * @warning Internally increases insomnia level
+ * Must be paired with api_hal_timebase_insomnia_exit
+ */
+void api_hal_timebase_insomnia_enter();
+
+/* Exit insomnia mode
+ * Allow device to go to sleep
+ * @warning Internally decreases insomnia level.
+ * Must be paired with api_hal_timebase_insomnia_enter
+ */
+void api_hal_timebase_insomnia_exit();