Save commands set to MCU or flash chip

Description

  There is no dedicated commands to save commands set to memory, it can:

1. Use save splash screen command. The splash screen is commands set either. The display run this automatically when power up (use "DSS0" turn it off);
2. Use write data to flash command, to run this use: "FLMCSA", or Arduino: runCommandSet(uint24_t A); 
3. Use write data to file command(V7 firmware), to run this use: "fCSfname ", or Arduino: runFile(const char[] fname).