Presenting evidence took volume as a parameter which it also set. It's
unnecessary as the evidence uses the same SFX player, the volume of
which is controlled by the player with a slider.

* Fixup evidence presentation code, methink

* Bump RC, because I can

* Complete AOLayer reimplementation
* Reimplemented sliding as well.

* Ported the project to CMake
  * Android and Mac support dropped for the time
being.
  * Tests, BASS and Discord-RPC are now options
* Restructured and reformated the project.
  * Merged `include` and `src`
  * Renamed `resource` to `data`
  * Renamed various files
  * External libraries headers are no longer included in `src`
  * Replaced header guards with #pragma once
  * Multiple refactors (keywords, headers)
  * Added Qt6 compatibility
* Removed various unused functions and headers
* Reworked AOPacket
  * When content is passed to AOPacket, it should be ensured that the content is already decoded.
  * Encoding/decoding are now static methods.
* Fixed various memory leaks
* Removed animation code for AOImage
  * AOImage is always using static images
* Simplified ChatLogPiece