Move GraphQL types into separate modules

[adzialocha]

This PR restructures the graphql::types module.

• Separate GraphQL Objects, Input Values and Responses into new modules
• Convert "constructors" to simple "build" methods
• Move resolvers into separate module, make them simple methods as well
• Rename DocumentValue to Resolved and implement downcast method on it
• Move PaginationData to stores::query as it is not related to GraphQL
• Rename all_documents query to collection

📋 Checklist

• Add tests that cover your changes
• Add this PR to the Unreleased section in CHANGELOG.md
• Link this PR to any issues it closes
• New files contain a SPDX license header

[codecov]

Codecov Report

Patch coverage: 94.85% and project coverage change: +0.01 🎉

Comparison is base (e6e8e31) 90.67% compared to head (4620908) 90.68%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #343      +/-   ##
==========================================
+ Coverage   90.67%   90.68%   +0.01%     
==========================================
  Files          74       74              
  Lines        6423     6423              
==========================================
+ Hits         5824     5825       +1     
+ Misses        599      598       -1     

Impacted Files	Coverage Δ
aquadoggo/src/db/stores/query.rs	94.89% <ø> (ø)
aquadoggo/src/graphql/mutations/publish.rs	100.00% <ø> (ø)
aquadoggo/src/graphql/queries/next_args.rs	97.43% <ø> (ø)
aquadoggo/src/graphql/resolvers.rs	90.76% <90.76%> (ø)
...uadoggo/src/graphql/objects/document_collection.rs	91.48% <91.48%> (ø)
aquadoggo/src/graphql/objects/document.rs	96.96% <96.96%> (ø)
...quadoggo/src/graphql/input_values/fields_filter.rs	100.00% <100.00%> (ø)
aquadoggo/src/graphql/input_values/order.rs	100.00% <100.00%> (ø)
aquadoggo/src/graphql/objects/document_fields.rs	100.00% <100.00%> (ø)
aquadoggo/src/graphql/queries/collection.rs	100.00% <100.00%> (ø)
... and 3 more

... and 1 file with indirect coverage changes

☔ View full report in Codecov by Sentry.
📢 Do you have feedback about the report comment? Let us know in this issue.

[adzialocha]

During development of the low-level query backend I stumbled over not finding the methods which resolve certain parts of the GraphQL tree, so I thought it could be cool to move it all to a resolvers module.

There are more resolvers of course (for example for the totalCount field etc.) which are not in there, but I think that might be a bit too much for now? Most of the resolvers are also "only" there to downcast values.

[sandreae]

Yeh, looks good to me. Actually, my first design of these module builders/reducers was in a functional style like this, but I changed it along the way cos I thought it gave a familiar api between the dynamic and static types. I didn't really think it was a big success though. I like this 👍

[sandreae]

There are more resolvers of course (for example for the totalCount field etc.) which are not in there, but I think that might be a bit too much for now? Most of the resolvers are also "only" there to downcast values.

Yeh, agree it's fine like this now.