Adds 'Show Stashed Changes` command

Adds experimental 'Apply Stashed Changes' command
Adds experimental 'Delete Stashed Changes' to stashed changes quick pick

src/quickPicks/stashList.ts

@@ -0,0 +1,32 @@
+'use strict';
+import { Iterables } from '../system';
+import { QuickPickOptions, window } from 'vscode';
+import { Keyboard } from '../commands';
+import { IGitStash } from '../gitService';
+import { CommandQuickPickItem, CommitQuickPickItem, getQuickPickIgnoreFocusOut } from '../quickPicks';
+
+export class StashListQuickPick {
+
+    static async show(stash: IGitStash, placeHolder?: string, goBackCommand?: CommandQuickPickItem): Promise<CommitQuickPickItem | CommandQuickPickItem | undefined> {
+        const items = ((stash && Array.from(Iterables.map(stash.commits.values(), c => new CommitQuickPickItem(c, ` \u2014 ${c.fileNames}`)))) || []) as (CommitQuickPickItem | CommandQuickPickItem)[];
+
+        if (goBackCommand) {
+            items.splice(0, 0, goBackCommand);
+        }
+
+        const scope = await Keyboard.instance.beginScope({ left: goBackCommand });
+
+        const pick = await window.showQuickPick(items, {
+            matchOnDescription: true,
+            placeHolder: placeHolder || `stash list \u2014 search by message, filename, or sha`,
+            ignoreFocusOut: getQuickPickIgnoreFocusOut()
+            // onDidSelectItem: (item: QuickPickItem) => {
+            //     scope.setKeyCommand('right', item);
+            // }
+        } as QuickPickOptions);
+
+        await scope.dispose();
+
+        return pick;
+    }
+}