Naming and coding style convention, new linter tool. (#945)

* Makefile, Scripts: new linter
* About: remove ID from IC
* Firmware: remove double define for DIVC/DIVR
* Scripts: check folder names too. Docker: replace syntax check with make lint.
* Reformat Sources and Migrate to new file naming convention
* Docker: symlink clang-format-12 to clang-format
* Add coding style guide

firmware/targets/f6/furi_hal/furi_hal_interrupt.h

@@ -0,0 +1,36 @@
+#pragma once
+
+#include <stm32wbxx_ll_tim.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** Timer ISR */
+typedef void (*FuriHalInterruptISR)();
+
+/** Initialize interrupt subsystem */
+void furi_hal_interrupt_init();
+
+/** Set DMA Channel ISR
+ * We don't clear interrupt flags for you, do it by your self.
+ * @param dma - DMA instance
+ * @param channel - DMA channel
+ * @param isr - your interrupt service routine or use NULL to clear
+ */
+void furi_hal_interrupt_set_dma_channel_isr(
+    DMA_TypeDef* dma,
+    uint32_t channel,
+    FuriHalInterruptISR isr);
+
+/** Set Timer ISR
+ * By default ISR is serviced by ST HAL. Use this function to override it.
+ * We don't clear interrupt flags for you, do it by your self.
+ * @param timer - timer instance
+ * @param isr - your interrupt service routine or use NULL to clear
+ */
+void furi_hal_interrupt_set_timer_isr(TIM_TypeDef* timer, FuriHalInterruptISR isr);
+
+#ifdef __cplusplus
+}
+#endif