fix(rhodibot): automated RSR compliance fixes (#3)

- Created missing

Co-authored-by: rhodibot <rhodibot@hyperpolymath.dev>

Author: hyperpolymath

CONTRIBUTING.md

@@ -0,0 +1,9 @@
+<!-- SPDX-License-Identifier: PMPL-1.0-or-later -->
+# Contributing
+
+1. Fork the repository
+2. Create a feature branch
+3. Ensure SPDX headers on all files
+4. Submit a pull request
+
+**Author:** Jonathan D.A. Jewell <j.d.a.jewell@open.ac.uk>