Add API

API/Schema/LibraryConnectors/LibraryConnector.cs

@@ -0,0 +1,18 @@
+using System.ComponentModel.DataAnnotations;
+using Microsoft.EntityFrameworkCore;
+
+namespace API.Schema.LibraryConnectors;
+
+[PrimaryKey("LibraryConnectorId")]
+public abstract class LibraryConnector(string libraryConnectorId, LibraryType libraryType, string baseUrl, string auth) : APISerializable
+{
+    [MaxLength(64)]
+    public string LibraryConnectorId { get; } = libraryConnectorId;
+
+    public LibraryType LibraryType { get; init; } = libraryType;
+    public string BaseUrl { get; init; } = baseUrl;
+    public string Auth { get; init; } = auth;
+    
+    protected abstract void UpdateLibraryInternal();
+    internal abstract bool Test();
+}