Adds experimental 'Stash Changes' command

Adds experimental 'Stash Changes' to stash list
Adds experimental 'Stash Unstaged Changes' to stash list

src/commands/stashSave.ts

@@ -0,0 +1,32 @@
+'use strict';
+import { InputBoxOptions, window } from 'vscode';
+import { GitService } from '../gitService';
+import { Command, Commands } from './common';
+import { Logger } from '../logger';
+
+export class StashSaveCommand extends Command {
+
+    constructor(private git: GitService) {
+        super(Commands.StashSave);
+    }
+
+    async execute(message?: string, unstagedOnly: boolean = false) {
+        if (!this.git.config.insiders) return undefined;
+
+        try {
+            if (message == null) {
+                message = await window.showInputBox({
+                    prompt: `Please provide a stash message`,
+                    placeHolder: `Stash message`
+                } as InputBoxOptions);
+                if (message === undefined) return undefined;
+            }
+
+            return await this.git.stashSave(this.git.repoPath, message, unstagedOnly);
+        }
+        catch (ex) {
+            Logger.error(ex, 'StashSaveCommand');
+            return window.showErrorMessage(`Unable to save stash. See output channel for more details`);
+        }
+    }
+}