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

applications/lfrfid_debug/view_modules/lfrfid_view_tune_vm.h

@@ -0,0 +1,26 @@
+#pragma once
+#include <gui/view.h>
+#include <view_modules/generic_view_module.h>
+
+class LfRfidViewTuneVM : public GenericViewModule {
+public:
+    LfRfidViewTuneVM();
+    ~LfRfidViewTuneVM() final;
+    View* get_view() final;
+    void clean() final;
+
+    bool is_dirty();
+    uint32_t get_ARR();
+    uint32_t get_CCR();
+
+private:
+    View* view;
+    void view_draw_callback(Canvas* canvas, void* _model);
+    bool view_input_callback(InputEvent* event, void* context);
+
+    void button_up();
+    void button_down();
+    void button_left();
+    void button_right();
+    void button_ok();
+};