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/qrcode/qrcode.h

@@ -76,8 +76,12 @@ extern "C" {
 
 uint16_t qrcode_getBufferSize(uint8_t version);
 
-int8_t
-qrcode_initText(QRCode* qrcode, uint8_t* modules, uint8_t version, uint8_t ecc, const char* data);
+int8_t qrcode_initText(
+    QRCode* qrcode,
+    uint8_t* modules,
+    uint8_t version,
+    uint8_t ecc,
+    const char* data);
 int8_t qrcode_initBytes(
     QRCode* qrcode,
     uint8_t* modules,