This is closer to the prior behavior.

Move contrast handling to `Conditionals_post.h` so pins files can override the LCD defaults.

* Fix macro evaluation in `temperature.cpp`
* Improve bed PID, PID debug output
* Add min PID power define

Co-Authored-By: Tim Moore <tim.moore@lightbend.com>
Co-Authored-By: AnHardt <github@kitelab.de>

This reverts commit 108d0df565.

Co-Authored-By: the-real-orca <stephan.veigl@gmail.com>

Allow `ENABLED`, `DISABLED`, `PIN_EXISTS`, and `BUTTON_EXISTS` to take multiple arguments. Also add:
- Alias `ANY(...)` for `!DISABLED(...)`
- Alias `ANY_PIN(...)` for `PIN_EXISTS(a) || PIN_EXISTS(b) ...`
- Alias `EITHER(A,B)` for `ANY(...)`
- Alias `ALL(...)` and `BOTH(A,B)` for `ENABLED(...)`
- `NONE(...)` for `DISABLED(...)`

Add support for printers with inverted fan pins by adding `#define FAN_INVERTING 1` to `Configuration_adv.h` and modifying the fan write macros.