- Move FWRETRACT to the planner
- Combine leveling, skew, etc. in a single modifier method
- Have kinematic and non-kinematic moves call one planner method

`MAX_SERVOS` => `NUM_SERVO_PLUGS`

- Clean up the API to use a `static` class instance to adhere to Marlin convention
- Add `const` position data access for read/write
- Add Storage capacity to the interface

It takes too long to display the mesh data for large mesh's at startup.   We should consider ways to speed this up.
Perhaps it makes sense to display an entire row of the mesh instead of just one mesh point?

Fixed for cycle used to initialize default values

- Drop `max_jerk` with `JUNCTION_DEVIATION`
- Add `max_e_jerk_factor` for use by `LIN_ADVANCE`
- Recalculate `max_e_jerk_factor` when `junction_deviation_mm` changes
- Fix LCD editing of `junction_deviation_mm`

`DONT_SWITCH` got lost along the way. Replace it with `DO_SWITCH_EXTRUDER` and adjust the code.

Co-Authored-By: Zwaubel

Fixes #10663

Fixes #10278

Fixes #10209

Followup to #10102

Reference #9983

Fix #9948