Add Sunlit Solar integration with configuration flow, API handling, and sensor support

.gitignore

@@ -0,0 +1,12 @@
+.vscode
+.devcontainer
+/config/.cloud
+/config/.storage
+/config/deps
+/config/tts
+/config/blueprints
+/config/*.yaml
+/config/.HA_VERSION
+/config/*.db*
+/config/*.log*
+__pycache__