* [FIRSTBOOT] refactor code:
-auto-detect all possible variants in firstboot
- DRY script code
- add $RESIZE_COMMENCED , $BITTBOY_CONFIG , $MIYOO_CONFIGvariable
- add debug log before any shutdown
- don't `export` env var if not needed
- move and use $DETECTED auto_ID variants on II Test_Block
- cleanup + add more descriptions
- add Test_Flip prompt for double check on Test Video (only if enduser selected "Flipped!" at first test)
- remove useless SWAP & MAIN part. mount
- add safety read-only for /boot before shutdown
* [BOARD] add gmenu2x inputs inputs with `manifest`
- update genimage config with `input_bittboy.conf` and `input_miyoo.conf`
* [README] Add flashing procedure schematic (made in draw.io)
* refactor firstboot -> Flashing procedure
displays msgbox at firsts launch:
- "Can you see this msg?" (to test readID correctness)
- "Select your device:" (to choose manually proper module parameters)
- "Test Video" & "Test_Keyboard" dialog
- "Test_Image" invertion + xyc/m3
- "Your Device" dialog for all FORCE_VARIANT
- "Test_Video'2" & "Test_Variant"
- "Does this device match yours?" msg before License
- add temp "st7789s" console variant
- load proper firsboot menu from uEnv read
- Perform Tests only for $DETECTED_VERSION
* add $device_ID array from console.cfg (see if manually selected device type, matches uboot choices)
* move at end RESIZE script in firstboot
* only reboot after firstboot if console variant changed during flashing
* default to "unknown" console if no match
* add "m3_gc9306" to devices_ID[]
* refactor "xyc" & "m3" FORCE_VERSION
* use dialog --pause in firstboot (displays left time)
* Correct indentations in firstboot to TABS
* add functions in script
update "firstboot" script
