* Unit tests: add "exists" to furi_record tests
* Unit tests: mu_warn, storage 64k test
* Storage: read/write over 64k
* Unit tests: moar tests for storage r/w for >64k cases
* Apps, libs: replace uint16_t with size_t on storage r/w operations
* Unit tests: better data pattern, subghz: warning if transmission is prohibited
Co-authored-by: あく <alleteam@gmail.com>
* Music player: move music_worker to library
* Music player: drop cli
* Debug: speaker debug app
* Debug: baudrate arg in uart_echo app
* Libs: add music_worker to api
* Libs: add music_worker to targets linker_dependencies
Co-authored-by: あく <alleteam@gmail.com>