Cache core

[dotansimha]

I wish to add a top-level cache configuration, so we can later use it for implementing plugins and other useful core things.

For example:

caches:
  - type: redis
     id: my-cache
     config:
        connection_string: "..."

And then the core of Conductor can use that, or plugins:

plugins:
  - type: response_cache 
     config:
        cache: my-cache

This way we can also assume that conductor cache is a Key->Value, and users can use a cache that matches their env (D1/KV for CF, Redis/something else for other servers).

Related:

• Response Caching (GraphQL level)  #10
• Response Caching (HTTP level)  #11