feat: Use xchacha implementation from rust crypto instead of sodium

ciphers/src/lib.rs

@@ -16,7 +16,7 @@ pub mod aead {
 
 /// Authenticated encryption with associated data with a constant nonce
 pub mod xaead {
-    pub use rosenpass_sodium::aead::xchacha20poly1305_ietf::{
+    pub use crate::subtle::xchacha20poly1305_ietf::{
         decrypt, encrypt, KEY_LEN, NONCE_LEN, TAG_LEN,
     };
 }