- Move `pause_print` argument `unload_length` after `show_lcd` so it's next to `DXC_ARGS`.
- Tweak the position and conditions of PLR save in `resume_print`.
- Add `Nozzle::park_mode_0_height` accessor to get the raised Z height.
- Remove extraneous `recovery.save` from `dwin.cpp`.
- Move PLR `info.volumetric...` to `flag`.
- Remove some G-code spaces in PLR code
- Document `pause.h` function declarations.

Co-authored-by: Msq001 <alansayyeah@gmail.com>

Co-authored-by: Scott Lahteine <thinkyhead@users.noreply.github.com>

Co-authored-by: Scott Lahteine <github@thinkyhead.com>

Co-authored-by: Scott Lahteine <github@thinkyhead.com>

Followup to #12551, addressing #12566

* Followup to LCD_TIMEOUT_TO_STATUS=0
* Make continuous purge screen fit 20x4
* Unify purge message modes
* Preserve last-set pause header mode

* Clean up Temperature PID
* Improve EEPROM read/write/validate
* Group `SINGLENOZZLE` saved settings
* Group planner saved settings
* Group filament change saved settings
* Group skew saved settings
* Group `FWRETRACT` saved settings

* Use NOZZLE_PARK_FEATURE for ADVANCED_PAUSE_FEATURE

Following up on #3231

Keep "astyled" reformatting

Apply `ENABLED` / `DISABLED` macros to files needing only a small
number of changes.

- Apply standards to cardreader.*
- Fix minor issues with cardreader.cpp
- Apply standards to some other stale regions

If only an LCD is defined and no menu or keyboard defined, there is a
compilation error.

Added conditional compilation.

Included support for BT dongle on AT90USB boards.
Added LCD Shift Register LCD control
Included support for RepRap Clone Wars project board (SAV MKI).