feat: Use chacha implementation from rust crypto instead of sodium

ciphers/src/lib.rs

@@ -9,7 +9,7 @@ const_assert!(KEY_LEN == hash_domain::KEY_LEN);
 
 /// Authenticated encryption with associated data
 pub mod aead {
-    pub use rosenpass_sodium::aead::chacha20poly1305_ietf::{
+    pub use crate::subtle::chacha20poly1305_ietf::{
         decrypt, encrypt, KEY_LEN, NONCE_LEN, TAG_LEN,
     };
 }