- Rename some AVR / DUE / ESP32 serial types
- Reduce two #error to one static_assert
- Update AVR/DUE error messages

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

* Skip check for USBCON during dependency detection
* Ignore incompatible Teensy_ADC library, which requires Teensy >= 3
* Add IS_AT90USB

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

Co-Authored-By: Jason Smith <20053467+sjasonsmith@users.noreply.github.com>

* Apply #pragma once in headers
* Adjust some thermistors formatting
* Misc cleanup and formatting

Pointed out by @GMagician

* Misc fixes and improvements

- Get rid of most critical sections on the Serial port drivers for AVR and DUE. Proper usage of FIFOs should allow interrupts to stay enabled without harm to queuing and dequeuing.
  Also, with 8-bit indices (for AVR) and up to 32-bit indices (for ARM), there is no need to protect reads and writes to those indices.
- Simplify the XON/XOFF logic quite a bit. Much cleaner now (both for AVR and ARM)
- Prevent a race condition (edge case) that could happen when estimating the proper value for the stepper timer (by reading it) and writing the calculated value for the time to the next ISR by disabling interrupts in those critical and small sections of the code - The problem could lead to lost steps.
- Fix dual endstops not properly homing bug (maybe).

* Set position immediately when possible

Fix #9906

* Update persistent_store_impl.cpp
* Remove define BYTE from serial functions since Arduino docs typically show 0 for the normal case.

* Enable hardware serial ports on LPC1768

* Fix compilation errors with other HALs

* FIx order of includes in LPC1768 HAL main.cpp

* Add support for RX_BUFFER_SIZE and TX_BUFFER_SIZE options in Configuration_adv.h

From @ejtagle, originally #7459

Implement AVR Platform