Integrate In-App age encrypted file feature

[ghost]

Add age encrypted file feature https://github.com/android-password-store/kage

[Zig-VS-TypeScript-VS]

Aeg is not a symmetric encryption.

symmetric encryption

• camellia
• Aes256
• Aegis256X4_256
• ChaCha20Poly1305 & XChaCha20Poly1305

public key encryption

age https://github.com/opencoff/sigtool https://www.kryptor.co.uk/