refactor(params): rustify

src/lib.rs

@@ -24,6 +24,7 @@ pub mod key;
 pub mod keyhistory;
 pub mod keyring;
 pub mod oauth2;
+pub mod param;
 pub mod peerstate;
 pub mod pgp;
 pub mod smtp;
@@ -48,7 +49,6 @@ pub mod dc_mimefactory;
 pub mod dc_mimeparser;
 pub mod dc_move;
 pub mod dc_msg;
-pub mod dc_param;
 pub mod dc_qr;
 pub mod dc_receive_imf;
 pub mod dc_saxparser;