sources/oauth: add callback URL to api

web/src/api/sources/OAuth.ts

@@ -0,0 +1,22 @@
+import { DefaultClient } from "../Client";
+import { Source } from "../Sources";
+
+export class OAuthSource extends Source {
+    provider_type: string;
+    request_token_url: string;
+    authorization_url: string;
+    access_token_url: string;
+    profile_url: string;
+    consumer_key: string;
+    callback_url: string;
+
+    constructor() {
+        super();
+        throw Error();
+    }
+
+    static get(slug: string): Promise<OAuthSource> {
+        return DefaultClient.fetch<OAuthSource>(["sources", "oauth", slug]);
+    }
+
+}