feat(databases): add pagination support to list endpoint

[hotdata-automation]

Auto-generated from the updated HotData OpenAPI spec.
Source: https://github.com/hotdata-dev/www.hotdata.dev/pull/275

[claude]

Auto-generated SDK update from the OpenAPI spec. Pagination params and response fields are consistent with the generator's conventions. LGTM.

[zfarrell]

Closing — fully superseded by #149 and #150, both already on main.

Every difference between this branch and main is main being ahead:

• hotdata/api/databases_api.py — main has limit + cursor plus search (feat(databases): add search parameter to list endpoint #150)
• hotdata/models/list_databases_response.py — main has all the pagination fields, but nullable per chore(databases): make pagination fields nullable #149; this branch still declares count/has_more/limit as required
• docs/ListDatabasesResponse.md and test/test_list_databases_response.py — same, main matches the nullable model

So merging this would regress the #149 nullable fix rather than add anything. The integration check here is also red.

One loose end: this PR's changelog bullet, feat(databases): add pagination support to list endpoint, never reached main. [Unreleased] currently names the two follow-ups (nullable fields, search parameter) but not the pagination feature itself, so the 0.9.0 notes would understate it. Worth adding that line back separately.