Before db_metrics were all or nothing. Now `InTx` metrics are always recorded, and query metrics are opt in.
Adds instrumentation & logging around serialization failures in the database.
- Adds a `jwtutils` package to be shared amongst the various
packages in the codebase that make use of JWTs. It's intended to help us
standardize on one library instead of some implementations using
`go-jose` and others using `golang-jwt`.
The main reason we're converging on `go-jose` is due to its support for
JWEs, `golang-jwt` also has a repo to handle it but it doesn't look
maintained: https://github.com/golang-jwt/jwe
- Adds the database implementation for fetching and caching keys
used for JWT signing. It's been merged into the `keyrotate` pkg and
renamed to `cryptokeys` since they're coupled concepts.
