* Documentation: add Doxyfile, prepare sources for doxygen. * Update ReadMe and remove obsolete CLA * Add contribution guide * Contributing: update text * Correct spelling
* About: hw, fw, boot version screens * About: fix comment * FuriHal: proper ARR in OS tick timer * GpioTester: all pins on/off option * Irda: fix release build * Format sources Co-authored-by: あく <alleteam@gmail.com>