feat.airapp sdk

LanMountainDesktop.AirAppTemplate/templates/component/README.md

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+# LanMountainDesktop.AirApp.ComponentTemplate
+
+A desktop component AirApp for LanMountainDesktop.
+
+## Build
+
+```bash
+dotnet build -c Release
+```
+
+This will produce a `.laapp` package in `bin/Release/net10.0/`.
+
+## Install
+
+Copy the `.laapp` file to LanMountainDesktop's plugins directory or install via the AirApp Market.
+
+## Development
+
+To test your component during development:
+
+1. Build the project
+2. Run LanMountainDesktop with debug mode:
+   ```bash
+   dotnet run --project path/to/LanMountainDesktop.csproj -- --debug-airapp path/to/your/bin/Debug/net10.0
+   ```
+
+## Customize
+
+- Edit `MyWidget.cs` to modify the component UI and behavior
+- Edit `airapp.json` to change metadata
+- Add more components by creating additional widget classes and registering them in `MyAirApp.cs`