Closes https://github.com/PostgREST/postgrest/issues/4245.
It adds a query on schema cache construction, but doesn't add a new
attribute to the SchemaCache type. We only need the information to be
passed to the `initialMediaHandlers` function to build the builtin media
handlers.
Fixes#3660. Load the config after getting the pg version but before loading the schema.
The regression happened on f09655b.
Also remove schema cache load wrapper and separate db queries in different functions.
Co-authored-by: Laurence Isla <lau.isla.c@gmail.com>
Splitting the output into separate files and adding top-level newlines makes this
much better to read and understand when looking at diffs.
Inspired by #1699
Those were left out of the schema dump when the features were introduced, probably
because ByteString doesn't have a toJSON instance. Changing the type to Text solves
this easily.
Resolves#3237
