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/irda/cli/irda_cli.cpp

@@ -1,11 +1,11 @@
-#include <furi-hal-delay.h>
+#include <furi_hal_delay.h>
 #include <irda.h>
-#include <app-template.h>
+#include <app_template.h>
 #include <cli/cli.h>
 #include <cmsis_os2.h>
 #include <irda_worker.h>
 #include <furi.h>
-#include <furi-hal-irda.h>
+#include <furi_hal_irda.h>
 #include <sstream>
 #include <string>
 #include <m-string.h>