Lots of stuff I forgot to commit because Holidays

- D&D dice engine (see README)
- Markdown support
- Phantom camera

addons/markdownlabel/.gitignore

@@ -0,0 +1,17 @@
+# Godot 4+ specific ignores
+.godot/
+
+# Godot-specific ignores
+.import/
+export.cfg
+export_presets.cfg
+*.import
+project.godot
+
+# Imported translations (automatically generated from CSV files)
+*.translation
+
+# Mono-specific ignores
+.mono/
+data_*/
+mono_crash.*.json