epic: Better app updater (with changelog)

[hantran-co]

Objectives

• Current app updater is so simple & unclear
• Users want to see what’s the new version & what’s available within the new version, see threads here: https://discord.com/channels/1107178041848909847/1110389363809976361/1201454917911588884

Design

Figma link: https://www.figma.com/design/DYfpMhf8qiSReKvYooBgDV/Jan-App-(3rd-version)?node-id=7611-73682&t=YCa9Bralyru6PW2j-4

Related

• [ ] https://github.com/janhq/jan/issues/3803

[Van-QA]

Adding more context based on the request from user: https://discord.com/channels/1107178041848909847/1110389363809976361/1201454917911588884