Add MX-T40 BLE desktop controller and protocol documentation

MANIFEST.in

@@ -0,0 +1,10 @@
+include README.md CONTRIBUTING.md pyproject.toml requirements*.txt .gitignore
+recursive-include docs *.md
+recursive-include scripts *.py
+recursive-include tests *.py
+recursive-include .github *.yml
+prune analysis
+prune ahh
+prune dist
+prune build
+global-exclude __pycache__ *.py[cod] *.bin *.apk *.apkm *.zip