Implemented template crud, db entities, import/export, ptero and pelican import

MoonlightServers.Api/Infrastructure/Database/Entities/TemplateDockerImage.cs

@@ -0,0 +1,19 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace MoonlightServers.Api.Infrastructure.Database.Entities;
+
+public class TemplateDockerImage
+{
+    public int Id { get; set; }
+    
+    [MaxLength(30)]
+    public string DisplayName { get; set; }
+    
+    [MaxLength(255)]
+    public string ImageName { get; set; }
+    
+    public bool SkipPulling { get; set; }
+    
+    // Relations
+    public Template Template { get; set; }
+}