feat: improve internal sql interface

Switches from rusqlite to sqlx to have a fully async based interface
to sqlite.

Co-authored-by: B. Petersen <r10s@b44t.com>
Co-authored-by: Hocuri <hocuri@gmx.de>
Co-authored-by: link2xt <link2xt@testrun.org>

src/param.rs

@@ -333,7 +333,7 @@ impl Params {
 
     pub fn get_msg_id(&self) -> Option<MsgId> {
         self.get(Param::MsgId)
-            .and_then(|x| x.parse::<u32>().ok())
+            .and_then(|x| x.parse().ok())
             .map(MsgId::new)
     }