Release v0.23.0: Search NIP-50

• Support for NIP-50: Search by @vitorpamplona, thanks to @brugeman and @EvgenyPlaksin for the first draft on this feature
• "Mark all messages as Read" feature by @maxmoney21m. Let's see @derekross approves the feature and bounty
• Refactoring by @Chemaclass
• Small performance improvements by @vitorpamplona
• Require biometrics to export private keys by @maxmoney21m
• Support for relative paths on preview card's OG:IMAGE tags by @vitorpamplona
• Changes the navigation bar's magnifying glass icon to globe by @maxmoney21m
• French translation by @bkBrunobk
• Add Password Managers autofill support to the login screen by @Radiokot