Expose RF24_DRIVER and fix linking to shared utility driver libs (#46)

* expose RF24_DRIVER as rf24-module attr (str)
* switch to ruff (remove dependency on black and pylint)
* fix linking to utility driver shared lib (when needed)
  affects wiringPi, pigpio, MRAA drivers.
  Using these drivers previously to build from source ended up with undefined symbols in the dist.

.github/workflows/build.yml

@@ -54,12 +54,11 @@ jobs:
       - name: check python typing
         run: mypy src
 
-      - name: check python examples PEP8 compliance
-        # duplicate-code error gets flagged because some examples use similar code snippets
-        run: pylint examples/*.py src/pyrf24/*.py --disable=duplicate-code --output-format=json:pylint.json
+      - name: lint python sources
+        run: ruff check examples/*.py src/pyrf24/*.py* setup.py docs/conf.py
 
-      - name: Match pylint problems to diff via github annotations
-        run: python ./.github/workflows/pylint_matcher.py pylint.json
+      - name: format python sources
+        run: ruff format examples/*.py src/pyrf24/*.py* setup.py docs/conf.py
 
       - name: Get doc dependencies
         run: |-