v1.2.1 release

Excited to announce the release of #0xchat v1.2.1! Here's what's new:

-Added voice & video call capabilities.
-Introduced Light-Theme UI.
-Expanded to 30+ language settings.
-Messages now support reply and mentions features.
-Included zaps records and notifications for zaps.
-Expired Time Options added for creating secret chats.
-Improvements to startup performance.