Add scripts for PostgreSQL migration and SQLite removal; update project references

- Introduced `publish-with-sql.ps1` to publish Jellyfin with SQL files.
- Added `remove-sqlite.ps1` to facilitate the removal of SQLite dependencies for PostgreSQL-only deployment.
- Created `rollback-to-net10.ps1` to revert .NET 11 changes back to .NET 10.
- Implemented `test_api.py` for testing API interactions.
- Added `verify-migration.ps1` to verify PostgreSQL migration steps.
- Updated various `.csproj` files to include `Microsoft.Kiota.Abstractions` package.
- Enhanced `JellyfinDbContext` to handle concurrency exceptions during save operations.
- Updated tests to include new package references and ensure compatibility with changes.

scripts/windows/Add-Indexes-Quick.ps1

@@ -0,0 +1,20 @@
+# Add Supplementary Indexes - Quick Command
+
+Write-Host "Connecting to jellyfin_testsdata and adding supplementary indexes..." -ForegroundColor Cyan
+Write-Host ""
+
+# Quick and simple - just run the SQL script
+psql -U jellyfin -d jellyfin_testsdata -f sql\schema_init\10_create_supplementary_indexes.sql
+
+if ($LASTEXITCODE -eq 0) {
+    Write-Host ""
+    Write-Host "✓ Success! Supplementary indexes added." -ForegroundColor Green
+    Write-Host ""
+    Write-Host "Next: Restart Jellyfin to see performance improvements" -ForegroundColor Yellow
+} else {
+    Write-Host ""
+    Write-Host "❌ Failed. Check that:" -ForegroundColor Red
+    Write-Host "  - PostgreSQL is running" -ForegroundColor Gray
+    Write-Host "  - Database 'jellyfin_testsdata' exists" -ForegroundColor Gray
+    Write-Host "  - You have the correct password" -ForegroundColor Gray
+}