docs: add contributing.md

.github/CONTRIBUTING.md

@@ -0,0 +1,21 @@
+# Contributing
+
+There are only a few rules:
+- Follow the commit convention as follows:
+  - The name of the commit should be `module: change`
+  - Try to be consistent with the module names; you can look at existing commits for the module names I use
+  - If there is more than one change, the change in the commit name should be the most impactful change
+  - Put other changes in the description
+- Format your code
+  - I use the vscode qml extension with default arguments to format the code, however you do not have to use it
+  - Just try to follow the code style of the rest of the code and ensure that there is:
+    - no trailing whitespace on any lines
+    - a single space between operators
+- No AI slop allowed
+  - AI readme/docs slop = instant block
+- PLEASE TEST YOUR PRS
+  - I can't believe I have to put this here, but please test your PRs before submitting them
+  - Your PR must not break anything currently existing, or specify in the description if it does
+- PR descriptions should be descriptive
+  - Please explain what the PR does and how to use it in your PR description
+  - Also include any breaking changes and/or side effects of the PR