Initial implementation: CLI + KDE Plasma 6 widget for Elgato Key Light

- Python CLI (click): discover, status, on/off/toggle, brightness, temperature, info
- mDNS discovery via zeroconf for automatic light detection
- Shared config at ~/.config/elgato-cli/config.json
- KDE Plasma 6 plasmoid with system tray icon, power/brightness/temperature controls
- Plasmoid uses XMLHttpRequest directly to light API (no CLI dependency)
- Unit tests for API client with mocked HTTP responses

pyproject.toml

@@ -0,0 +1,23 @@
+[build-system]
+requires = ["setuptools>=68.0"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "elgato-cli"
+version = "0.1.0"
+description = "CLI tool to control Elgato Key Light"
+requires-python = ">=3.11"
+dependencies = [
+    "click>=8.0",
+    "requests>=2.28",
+    "zeroconf>=0.80",
+]
+
+[project.optional-dependencies]
+dev = ["pytest>=7.0"]
+
+[project.scripts]
+elgato = "elgato_cli.cli:cli"
+
+[tool.setuptools.packages.find]
+where = ["src"]