* token: add Token::token_secrets() and spending-condition helpers
- New helpers on Token that do not require mint keysets:
- spending_conditions()
- p2pk_pubkeys()
- p2pk_refund_pubkeys()
- htlc_hashes()
- locktimes()
- Introduce token_secrets() to unify V3/V4 proof traversal and avoid duplication
- Bypass short->long keyset-id mapping since only Secret is needed for conditions
- Use &Secret for TryFrom to fix compile error
* 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
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Co-authored-by: thesimplekid <tsk@thesimplekid.com>
