* Refactor bastardkb/charybdis/4x6

- Update keyboard aliases accordingly
- Migrate various configuration to data-driven
- Use short SPDX license headers
- Remove configuration that trends towards user-specific (CRC Table)
- Migrate common configuration upwards
- Migrate keymap to JSON
- Remove likely unneeded v1 revision per #23811
- Remove revisions splinky_2, splinky_3, and stemcell where a converter
  should be used
- Rename v2/elitec -> elitec. Specifically named elitec, as this board
  requires pin compatibility with an Elite-C (bottom 5 pins)

* Add aliases

* Replace unecessarily removed split hand pin configuration

* Revert "Replace unecessarily removed split hand pin configuration"

This reverts commit 0b98d1bc140a4b18c16d2b524cc8731f016372b1.

After second thought, it is not necessary to configure this by default,
as any user who wishes to set handedness by pin and is using an Elite-C
pin compatible development board will need to manually set the pin
anyway, which likely means referencing the readme.md file, which also
contains the necessary SPLIT_HAND_PIN_LOW_IS_LEFT configuration.

* Refactor bastardkb/charybdis/3x6

- Update keyboard aliases accordingly
- Migrate various configuration to data-driven
- Use short SPDX license headers
- Remove configuration that trends towards user-specific (CRC Table)
- Migrate common configuration upwards
- Migrate keymap to JSON
- Remove likely unneeded v1 revision per #23810
- Remove revisions splinky_2, splinky_3, and stemcell where a converter
  should be used
- Rename v2/elitec -> elitec. Specifically named elitec, as this board
  requires pin compatibility with an Elite-C (bottom 5 pins)

* Correct keyboard name in keymap

* Replace unecessarily removed split hand pin configuration

* Revert "Replace unecessarily removed split hand pin configuration"

This reverts commit 737cb635fa8de29bdf0f4ae54cf51b7a4715c7f3.

After second thought, it is not necessary to configure this by default,
as any user who wishes to set handedness by pin and is using an Elite-C
pin compatible development board will need to manually set the pin
anyway, which likely means referencing the readme.md file, which also
contains the necessary SPLIT_HAND_PIN_LOW_IS_LEFT configuration.

* Refactor bastardkb/charybdis/3x5

- Migrate various configuration to data-driven
- Use short SPDX license headers
- Remove configuration that trends towards user-specific (CRC Table)
- Migrate common configuration upwards
- Migrate keymap to JSON
- Remove likely unneeded v1 revision per #23638
- Remove revisions splinky_2, splinky_3, and stemcell where a converter
  should be used
- Rename v2/elitec -> elitec. Specifically named elitec, as this board
  requires pin compatibility with an Elite-C (bottom 5 pins)

* Aliases

Initial

* Remove deprecated `RGB_` and Mouse keycodes

* Update old mouse keycodes, 0-9/A-M

* Update old mouse keycodes, N-Z & layouts

* Missed some stuff

* Refactor bastardkb/dilemma/3x5_2

- Rename splinky -> promicro as the DIY PCB supports a Pro Micro
  compatible development board
    - Update keyboard aliases accordingly
- Migrated shared configuration to top level 3x5_2 directory
- Migrate keymap to JSON
- Migrate miscellaneous configuration to JSON
- Remove configuration that trends towards user-specific (CRC Table)
- Use short SPDX license headers
- Tidy up readme and make note of differences between PCBs

In short, the only difference between these two revisions (assembled vs.
promicro) is SPI vs. I2C (respectively) is used for the Cirque Trackpad.

* Migrate promicro configuration to AVR

The code in dilemma.c that reinitialises the ADC capable pins on RP2040
as digital inputs is not needed. Per section RP2040-E6 (p.630) of RP2040
datasheet, it appears digital inputs are *not* disabled, and this should
be handled internally anyway in matrix initialisation

* Refactor bastardkb/skeletyl

- Update keyboard aliases accordingly
- Migrate keymap to JSON
- skeletyl/blackpill
  - Migrate common configuration to keyboard level
  - Remove unnecessary or user-specific configuration
  - Migrate some configuration to data-driven
  - Use short SPDX license headers
  - Remove unnecessary rules.mk file
  - Formatting pass on keyboard.json
- skeletyl/v1
  - Remove likely unneeded version, per qmk#23812
- skeletyl/v2
  - Remove splinky_2 revision, per qmk#23812
  - Remove splinky_3, stemcell revisions; converter feature should
    be used here
- Rename skeletyl/v2/elitec -> skeletyl/promicro, as a converter can
  be used for any pin-compatible microcontrollers

* Update keyboards/bastardkb/skeletyl/keymaps/default/keymap.json

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

---------

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

* Refactor bastardkb/scylla

- Update keyboard aliases accordingly
- Migrate keymap to JSON and better represent physical layout
- scylla/blackpill
  - Migrate common configuration to keyboard level
  - Remove unnecessary or user-specific configuration
  - Migrate some configuration to data-driven
  - Use short SPDX license headers
  - Remove unnecessary rules.mk file
  - Formatting pass on keyboard.json
- scylla/v1
  - Remove likely unneeded version, per qmk#23814
- scylla/v2
  - Remove splinky_2 revision, per qmk#23814
  - Remove splinky_3, stemcell revisions; converter feature should
    be used here
- Rename scylla/v2/elitec -> scylla/promicro, as a converter can
  be used for any pin-compatible microcontrollers

* Small keymap fix