feat: Upgrade to 4JLibs libraries

Includes fixes and some modernizations compared to the original 4J
library binaries. Also introduces functionality to support stuff like
F2 screenshots, etc. This is basically the beginning of modernizing the
codebase.

.github/ISSUE_TEMPLATE/config.yml

@@ -1,5 +1,5 @@
 blank_issues_enabled: false
 contact_links:
-  - name: MinecraftConsoles Community Discord
-    url: https://discord.gg/jrum7HhegA
+  - name: ❗NEW❗ MinecraftConsoles Community Discord
+    url: https://discord.gg/dH8AZWGcau
     about: If you need help, please ask for it in our Discord! You will get assistance much faster there, including help getting the project to compile.

.gitignore

@@ -420,3 +420,6 @@ result
 result-*
 .direnv/
 .xwin-cache/
+
+# macOS
+.DS_Store