[Keyboard] Add converter/a1200/mistress1200 variant (#16634)

Co-authored-by: Joel Challis <git@zvecr.com>
Co-authored-by: Drashna Jaelre <drashna@live.com>

[Keyboard] Fix resume1800 - Dynamic layer count undefined (#16877)

[Keyboard] Add CrimsonKeyboards' Resume1800 (#16842)

[Keyboard] sandbox - fix keymaps (#16873)

[Keyboard] Add deskpad (#15602)

Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: Ryan <fauxpark@gmail.com>

Ploopy Trackball Mini: only define DPI options as needed (#16160)

[Keyboard] Add the Ciel (#16816)

Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: Ryan <fauxpark@gmail.com>

[Keyboard] Add digicarpice (#16791)

Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: swiftrax <swiftrax@github.com>

[Keyboard] SharkPCB release Beta compatibility (#16713)

Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: Ryan <fauxpark@gmail.com>

[Keyboard] Add sandbox keyboard (#16021)

Co-authored-by: precondition <57645186+precondition@users.noreply.github.com>
Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: Ryan <fauxpark@gmail.com>

Anne Pro 2 Refactor (#16864)

* move RGB Matrix rules to keyboard level

* move PERMISSIVE_HOLD config to keyboard level

* annepro2.c: convert tabs to spaces

* refactor rules.mk files

Reformats each version's `rules.mk` file to be arranged more similarly to those of the rest of the keyboards in QMK.

No logic change.

* annepro2.c: allow compilation without RGB Matrix

Wraps the `led_enabled` definition and the `KC_AP_RGB_*` keycodes in `#ifdef RGB_MATRIX_ENABLE`, allowing successful compilation if the user sets `RGB_MATRIX_ENABLE = no`.

* rework readme files

Reworks the main `readme.md` file to be more friendly to GitHub viewing, and removes the single-line version-specific readme files (exposes the main readme to QMK Configurator users).

* info.json: update maintainer value

* info.json: apply friendly formatting

Refine LED indicator documentation (#16304)

[Keyboard] Add Phase One keyboard (#16430)

Co-authored-by: Ryan <fauxpark@gmail.com>

Fix Xorg segfault with KeebCats PCBs (#16434)

[Keyboard] Update X-Bows Keyboard (#16765)

Co-authored-by: Ryan <fauxpark@gmail.com>
Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: Shulin <mumu@x-bows.com>

rgblight: Limit max repeat times in rgblight_blink_layer_repeat (#16860)

Resolve layout macro inconsistencies for rmkeebs/rm_numpad (#16856)

[Keyboard] Add avalanche (#16407)

* [Keyboard] Add avalanche

* PR feedback

* Update keyboards/avalanche/v1/config.h

* Update keyboards/avalanche/v1/v1.h

* Update keyboards/avalanche/v2/config.h

* Update keyboards/avalanche/v2/v2.h

* Update keyboards/avalanche/v3/config.h

* Update keyboards/avalanche/v3/v3.h

* Apply suggestions from code review

* Remove rules.mk comment and fix other comments.

* Shared encoder code, follow conventions in rules.mk files.

* Remove config files which do not change defaul behavior.

[Keyboard] Add via support for creatkeebs/glacier (#16747)

Co-authored-by: Joel Challis <git@zvecr.com>

[Keyboard] move/rename obro to Meridian RGB (#16828)

Co-authored-by: Joel Challis <git@zvecr.com>