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

lib/toolbox/random_name.c

@@ -36,8 +36,7 @@ void set_random_name(char* name, uint8_t max_name_size) {
     uint8_t prefix_i = rand() % SIZEOF_ARRAY(prefix);
     uint8_t suffix_i = rand() % SIZEOF_ARRAY(suffix);
 
-    sniprintf(
-        name, max_name_size, "%s_%s", prefix[prefix_i], suffix[suffix_i]);
+    sniprintf(name, max_name_size, "%s_%s", prefix[prefix_i], suffix[suffix_i]);
     // Set first symbol to upper case
     name[0] = name[0] - 0x20;
 }