Merge pull request #821 from shukari/contributionHelp

Added Github CONTRIBUTING.md file

Author: ianmcorvidae

.github/CONTRIBUTING.md

@@ -0,0 +1,22 @@
+# Contributing to Meshtastic Python
+
+## Development resources
+- [API Documentation](https://python.meshtastic.org/)
+- [Meshtastic Python Development](https://meshtastic.org/docs/development/python/)
+- [Building Meshtastic Python](https://meshtastic.org/docs/development/python/building/)
+- [Using the Meshtastic Python Library](https://meshtastic.org/docs/development/python/library/)
+
+## How to check your code (pytest/pylint) before a PR
+- [Pre-requisites](https://meshtastic.org/docs/development/python/building/#pre-requisites)
+- also execute `poetry install --all-extras --with dev,powermon` for all optional dependencies
+- check your code with github ci actions locally
+    - You need to have act installed. You can get it at https://nektosact.com/ 
+    - on linux: `act -P ubuntu-latest=-self-hosted --matrix "python-version:3.12"`
+    - on windows:
+      - linux checks (linux docker): `act --matrix "python-version:3.12"`
+      - windows checks (windows host): `act -P ubuntu-latest=-self-hosted --matrix "python-version:3.12"`
+- or run all locally:
+    - run `poetry run pylint meshtastic examples/ --ignore-patterns ".*_pb2.pyi?$"`
+    - run `poetry run mypy meshtastic/`
+    - run `poetry run pytest`
+    - more commands see [CI workflow](https://github.com/meshtastic/python/blob/master/.github/workflows/ci.yml)