Add support for PAW3204 Optical Sensor (#17669)

Co-authored-by: gompa <gompa@h-bomb.nl>
Co-authored-by: Stefan Kerkmann <karlk90@pm.me>

Use correct angle tune range of +/-127 on PMW33XX (#17708)

...partially reverts 580bcff4f65a3a9ee301de0fd036de7b610c7ee2 as the
datasheet doesn't claim that the angle tuning as limited to +/- 30
degrees.

Use correct angle tune range of +/-30 on PMW33XX (#17693)

Co-authored-by: Daniel Kao <daniel.m.kao@gmail.com>

Co-authored-by: Daniel Kao <daniel.m.kao@gmail.com>

[Code] Add solid reactive gradient mode (#17228)

[Core] PMW33XX drivers overhaul (#17613)

* PMW33XX drivers overhaul

This combines the PMW3389 and PM3360 drivers as they only differ in the
firmware blobs and CPI get and set functions. The following changes have
been made:

* PMW3389 now gets the same multi-sensor feature that is already available on the
  PMW3360.

* Introduced a shared pmw33xx_report_t struct is now directly readable via SPI
  transactions instead of individual byte-sized reads, saving multiple
  copies and bitshift operations.

* pmw33(89/60)_get_report functions had unreachable branches in their motion
  detection logic these have been simplied as much as possible.

* The fast firmware upload option has been removed as this becomes obsolete by
  the newly introduced polled waiting functions for ChibiOS polled waiting

* PMW33(60/89)_SPI_LSBFIRST and PMW33(60/89)_SPI_MODE config options
  have been removed as they don't need to be configurable.

* All PMW3389 and PMW3360 defines have been unified to a PMW33XX prefix
  to reduce code duplication and make the defines interchangeable

* Adjust keyboards to PMW33XX naming scheme

Cirque trackpad features: circular scroll, inertial cursor (#17482)

Grammar fixes for docs/feature_converters.md (#17652)

Merge remote-tracking branch 'origin/master' into develop

[Docs] Add Encoder requirements to PR Checklist doc (#17634)

Co-authored-by: Nick Brassel <nick@tzarc.org>

Merge remote-tracking branch 'origin/master' into develop

Add basic secure docs (#17577)

Add converter docs (#17593)

Make debounce() signal changes in the cooked matrix as return value (#17554)

Merge remote-tracking branch 'origin/master' into develop

Attempt to discourage manual MSYS install for new users (#17556)

Tentative Teensy 3.5 support (#14420)

* Tentative Teensy 3.5 support

* Set firmware format to .hex for ARM Teensys

* Got to "device descriptor failed" by comparing with Teensy 3.6 code

* Drop down to 96MHz...

* Bump back up to 120MHz

Merge remote-tracking branch 'origin/master' into develop

MSYS2 install: use MinGW python-qmk package (#17302)

* MSYS2 install: use MinGW python-qmk package

* Add missing flashers

* Note VC Redist for manual install

* VC Redist no longer needed

Merge remote-tracking branch 'origin/master' into develop

Allow for RGB actions to take place on Keydown instead of Keyup (#16886)

* Allow for switch on keydown

* add docs