Add POST API for albums.

client/src/api.ts

@@ -187,6 +187,22 @@ export function checkModifySongRequest(req: any): boolean {
     return true;
 }
 
+// Create a new album (POST).
+export const CreateAlbumEndpoint = '/album';
+export interface CreateAlbumRequest {
+    name: String;
+    tagIds?: Number[];
+    artistIds?: Number[];
+    storeLinks?: String[];
+}
+export interface CreateAlbumResponse {
+    id: Number;
+}
+export function checkCreateAlbumRequest(req: any): boolean {
+    return "body" in req &&
+        "name" in req.body;
+}
+
 // Create a new artist (POST).
 export const CreateArtistEndpoint = '/artist';
 export interface CreateArtistRequest {