Implement pagination for list APIs

[eric-maynard]

Description

The Apache Iceberg REST catalog spec describes how APIs like listNamespaces can implement pagination, but Polaris currently does not implement pagination.

This PR implements pagination for listNamespaces, listViews, and listTables. It also introduces a framework that could be used to implement pagination for other APIs like listCatalogs.

Fixes #147

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• Documentation update
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Added tests in BasePolarisCatalogTest.

Manual testing confirms that the page-size limit applies, and that page tokens can be used to continue a listing operation:

  curl -X GET "http://localhost:8181/api/catalog/v1/quickstart_catalog/namespaces" \
     -H "Authorization: Bearer principal:root;realm:default-realm" \
     -H "Content-Type: application/json" \
     && echo
{"namespaces":[["ns1"],["ns2"],["ns3"]],"next-page-token":null}

. . .

curl -X GET "http://localhost:8181/api/catalog/v1/quickstart_catalog/namespaces" \
     -H "Authorization: Bearer principal:root;realm:default-realm" \
     -H "Content-Type: application/json" \
     --get \
     --data "pageSize=1" \
     && echo
{"namespaces":[["ns1"]],"next-page-token":"cG9sYXJpczoxOjE="}

. . .

curl -X GET "http://localhost:8181/api/catalog/v1/quickstart_catalog/namespaces" \
     -H "Authorization: Bearer principal:root;realm:default-realm" \
     -H "Content-Type: application/json" \
     --get \
     --data "pageToken=cG9sYXJpczoxOjE=" \
     --data "pageSize=1" \
     && echo
{"namespaces":[["ns2"]],"next-page-token":"cG9sYXJpczoyOjE="}

Checklist:

Please delete options that are not relevant.

• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• If adding new functionality, I have discussed my implementation with the community using the linked GitHub issue

[dbosco]

I can't resolve my own feedback. Can you close them? Thanks