FileDatabase engine port from snailbird-content TS/Node program

DeepDrftContent/FileDatabase/Models/MetaData.cs

@@ -0,0 +1,17 @@
+namespace DeepDrftContent.FileDatabase.Models;
+
+/// <summary>
+/// Base metadata for media entries
+/// </summary>
+/// <param name="MediaKey">The key used to identify the media file</param>
+/// <param name="Extension">The file extension of the media</param>
+public record MetaData(string MediaKey, string Extension);
+
+/// <summary>
+/// Extended metadata for image entries, including aspect ratio
+/// </summary>
+/// <param name="MediaKey">The key used to identify the media file</param>
+/// <param name="Extension">The file extension of the media</param>
+/// <param name="AspectRatio">The aspect ratio of the image</param>
+public record ImageMetaData(string MediaKey, string Extension, double AspectRatio) 
+    : MetaData(MediaKey, Extension);