catalog: fix version format to 4-part (Major.Minor.Patch.Build)

[CCoupel]

Context

Emby catalog requires plugin versions in the format `Major.Minor.Patch.Build` (4 parts). The current version uses 3-part semver.

Problem

• `VirtualLib.csproj` uses `1.1.0` (3 parts)
• CI tag pattern uses `v*..` which only matches 3-part tags
• Emby's `IPlugin.Version` returns a `System.Version` which expects 4 parts for catalog compatibility

Fix

1. Update `VirtualLib.csproj`:
   ```xml
   1.1.0.0
   ```
2. Update GitHub Actions tag pattern in `.github/workflows/*.yml`:
   ```yaml
   tags:
   • 'v*...*'
     ```

Priority

Blocker — Emby catalog API rejects submissions with non-conforming version formats.