The WIP GET /api/filler-presets, /api/watermarks, and
/api/graphics-elements endpoints omitted the Name= route attribute
used by the other API GET actions (e.g. FFmpegProfileController). Add
Name = "GetFillerPresets" / "GetWatermarks" / "GetGraphicsElements" for
consistency.
Also add handler tests (FillerPresetHandlerTests, WatermarkHandlerTests,
GraphicsElementHandlerTests) covering the GetAll*ForApi handlers using
the InMemoryTvContext harness: multi-row projection to (Id, Name) DTOs,
the empty-DB case, and the graphics-element ordering rule (named
elements sort before elements whose projected Name equals FileName).
timothy
0eaedb9cf6