Add 'lock_vault' command (#1450)

* Update manifest.json

Add additional command to lock the vault

* Update shortcuts.ts

add mousetrap binding for lock_vault command

* Update commands.background.ts

add option to lock vault with shortcut

* Update messages.json

add german key for lock_vault

* Update messages.json

add english key for 'lock_vault' command

* remove commandLockVaultDesc from de message pack

* Update messages.json

* Update shortcuts.ts

update comment for safari keybinding

* Update shortcuts.ts

remove confusing comment

Co-authored-by: ljakobitz@dev5310.com <ljakobitz@dev5310.com>
Co-authored-by: Kyle Spearrin <kspearrin@users.noreply.github.com>

src/content/shortcuts.ts

@@ -35,6 +35,10 @@ document.addEventListener('DOMContentLoaded', (event) => {
         });
     }
 
+    Mousetrap.bind('mod+shift+s', () => {
+        sendMessage('lock_vault');
+    });
+
     function sendMessage(shortcut: string) {
         const msg: any = {
             command: 'keyboardShortcutTriggered',