code analysis and cleanup (#1411)

* cleanup scanner project

* cleanup infrastructure projects

* cleanup ffmpeg project

* cleanup core project

* cleanup app project

* cleanup main project

* update dependencies

* code cleanup

ErsatzTV.Application/Filler/Commands/DeleteFillerPresetHandler.cs

@@ -17,7 +17,7 @@ public class DeleteFillerPresetHandler : IRequestHandler<DeleteFillerPreset, Eit
         DeleteFillerPreset request,
         CancellationToken cancellationToken)
     {
-        await using TvContext dbContext = _dbContextFactory.CreateDbContext();
+        await using TvContext dbContext = await _dbContextFactory.CreateDbContextAsync(cancellationToken);
         Validation<BaseError, FillerPreset> validation = await FillerPresetMustExist(dbContext, request);
         return await validation.Apply(ps => DoDeletion(dbContext, ps));
     }
@@ -28,7 +28,7 @@ public class DeleteFillerPresetHandler : IRequestHandler<DeleteFillerPreset, Eit
         return dbContext.SaveChangesAsync().ToUnit();
     }
 
-    private Task<Validation<BaseError, FillerPreset>> FillerPresetMustExist(
+    private static Task<Validation<BaseError, FillerPreset>> FillerPresetMustExist(
         TvContext dbContext,
         DeleteFillerPreset request) =>
         dbContext.FillerPresets

ErsatzTV.Application/Filler/Commands/UpdateFillerPresetHandler.cs

@@ -17,10 +17,10 @@ public class UpdateFillerPresetHandler : IRequestHandler<UpdateFillerPreset, Eit
     {
         await using TvContext dbContext = await _dbContextFactory.CreateDbContextAsync(cancellationToken);
         Validation<BaseError, FillerPreset> validation = await FillerPresetMustExist(dbContext, request);
-        return await LanguageExtensions.Apply(validation, ps => ApplyUpdateRequest(dbContext, ps, request));
+        return await validation.Apply(ps => ApplyUpdateRequest(dbContext, ps, request));
     }
 
-    private async Task<Unit> ApplyUpdateRequest(
+    private static async Task<Unit> ApplyUpdateRequest(
         TvContext dbContext,
         FillerPreset existing,
         UpdateFillerPreset request)