Add PostgreSQL support for mint and wallet (#878)

* Add PostgreSQL support for mint and wallet

* Fixed bug to avoid empty calls `get_proofs_states`

* Fixed SQL bug

* Avoid redudant clone()

* Add more tests for the storage layer

* Minor enhacements

* Add a generic function to execute db operations

This function would log slow operations and log errors

* Provision a postgres db for tests

* Update deps for msrv

* Add postgres to pipeline

* feat: add psgl to example and docker

* feat: db url fmt

---------

Co-authored-by: thesimplekid <tsk@thesimplekid.com>

crates/cdk-sql-common/src/mint/auth/mod.rs

@@ -262,9 +262,10 @@ where
             FROM
                 keyset
             WHERE
-                active = 1;
+                active = :active;
             "#,
         )?
+        .bind("active", true)
         .pluck(&*conn)
         .await?
         .map(|id| Ok::<_, Error>(column_as_string!(id, Id::from_str, Id::from_bytes)))