Build Fix & Removal of NMS | v4.18.5

Changes in 4.18

• Merge PR by @petulikan1 that fixes various issues & updates the plugin for 1.21.4 in #90
• Add first GitHub workflows to start automating the release to Modrinth
• Fix build issues preventing project from building in GitHub workflows (hopefully)
• Remove unused NMS utils, reducing the jar size

New Contributors

• @petulikan1 made their first contribution in #90

Full Changelog: v4.17-beta.7...v4.18.5