docs: add contributing guidelines

CONTRIBUTING.md

@@ -1,8 +1,20 @@
 # Contributing
 
 - [Code Of Conduct](#code-of-conduct)
+  - [Principles](#principles)
+  - [Violations](#violations)
+  - [Feedback](#feedback)
 - [Submission Guidelines](#submission-guidelines)
+  - [Submitting An Issue](#submitting-an-issue)
+  - [Commenting On A Issue](#commenting-on-a-issue)
+  - [Issue Closure](#issue-closure)
+  - [Issue Re-Opening](#issue-re-opening)
 - [Commit Message Guidelines](#commit-message-guidelines)
+  - [Commit Message Format](#commit-message-format)
+    - [Type](#type)
+    - [Subject](#subject)
+    - [Body](#body)
+    - [Footer](#footer)
 
 ## Code Of Conduct