Extract remote source provider registry into the vscode.git-base extension (#137656)

extensions/github/src/remoteSourcePublisher.ts

@@ -0,0 +1,18 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import { publishRepository } from './publish';
+import { API as GitAPI, RemoteSourcePublisher, Repository } from './typings/git';
+
+export class GithubRemoteSourcePublisher implements RemoteSourcePublisher {
+	readonly name = 'GitHub';
+	readonly icon = 'github';
+
+	constructor(private gitAPI: GitAPI) { }
+
+	publishRepository(repository: Repository): Promise<void> {
+		return publishRepository(this.gitAPI, repository);
+	}
+}