Cardano Updates

This limit the available features of `mithril-common` to a minimum,
making it easier for rust compiler to reuse build artifacts.

add shared aggregator client

imported and adapted from the associated route tests in the
`mithril-aggregator` aggregator client.

Make one test for shared features on http method instead of testing them
on both get and post

* mithril-aggregator from `0.7.77` to `0.7.78`
* mithril-common from `0.6.12` to `0.6.13`
* mithril-signer from `0.2.262` to `0.2.263`

the test suite is copied and adapted from `mithril-client`

To enable testing with canned `openapi.yml` version or setting up a
always failing provider

This is useful for context when the `APIVersionProvider` don't need to
return response that may evolve at runtime, such as with the
aggregator-client in the mithril-client.

This also enable the new shared aggregator-client to have a default api
version provider, that will always use the base `openapi.yml`, but
provide a way to use another provider in its builder (for the aggregator
and the client that will fetch the version discriminant based on the
chain).

and move certificate_details query to `query::certificate::get_certificate_details`

imported from mithril-signer client

imported and adapted from the associated route tests in the
`mithril-aggregator` aggregator client.

Make one test for shared features on http method instead of testing them
on both get and post