easyrpg-player: update, enable on Darwin

[OPNA2608]

Description of changes

• liblcf:
  • 0.7.0 -> 0.8
  • enable tests
• easyrpg-player:
  • 0.7.0 -> 0.8
  • pull in patch for fmt10 (after its treewide bump in fmt: 9.1.0 -> 10.0.0 #233330)
  • enable tests
  • enable on Darwin

On MIDI options on Darwin:

• wildmidi on Darwin would require waiting for wildmidi: Enable on Darwin & refactor config, gst-plugins-bad: enable wildmidi on Darwin #242621
• fluidsynth has a broken CMake config on all platforms, fluidsynth: CMake config broken #242623

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandbox = true set in nix.conf? (See Nix manual)
• Tested, as applicable:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• 23.11 Release Notes (or backporting 23.05 Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
• Fits CONTRIBUTING.md.

[nixos-discourse]

This pull request has been mentioned on NixOS Discourse. There might be relevant details there:

https://discourse.nixos.org/t/prs-already-reviewed/2617/1027