* feat(mouse): Add mouse move and scroll support
* Use Zephyr input subsystem for all pointers.
* Input processors for modifying events, e.g. scaling, swapping
codes, temporary (mouse) layers, etc.
* Mouse move/scroll behaviors.
* Infrastructure in place for physical pointer input devices.
* feat: Add input split support.
* docs: Add initial pointer docs.
---------
Co-authored-by: Cem Aksoylar <caksoylar@users.noreply.github.com>
Co-authored-by: Alexander Krikun <krikun98@gmail.com>
Co-authored-by: Robert U <urob@users.noreply.github.com>
Co-authored-by: Shawn Meier <ftc@users.noreply.github.com>
Co-authored-by: Chris Andreae <chris@andreae.gen.nz>
Co-authored-by: Anant Thazhemadam <47104651+thazhemadam@users.noreply.github.com>
Co-authored-by: Erik Tollerud <erik.tollerud@gmail.com>
Co-authored-by: Nicolas Munnich <98408764+Nick-Munnich@users.noreply.github.com>
Note there was one place where a non-strict prototype was actually being used
with an argument, in `zmk_hog_init`. In this case, the actual argument type was
added instead.
* Add HID report/descriptor for a new report with mouse buttons,
and x/y/wheel deltas.
* New mouse key press behavior for press/release of mouse keys.
* Add constants for HID main item values (e.g. data/array/absolute)
* Define and use constants for our HID report IDs.
The application usage used by report 1 is `HID_USAGE_GD_KEYBOARD`. Moreover, the `keys` usage page (0x07) that primarily feeds into this report is predominantly keyboard codes. The rest of the system should align with this naming convention.
