feat: regenerate API client from OpenAPI spec

[convoy-sdk-bot]

Automated regeneration via oapi-codegen from docs/v3/openapi3.yaml on frain-dev/convoy main. The hand-written root package and webhook verify are untouched by the sync script.

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Note

Medium Risk
JSON field rename is a breaking change for SDK users still using sync_dynamic_event_ack; new dynamic-event config flags affect ingest behavior when set via the API.

Overview
Regenerates client/client.gen.go so project config models match the upstream OpenAPI spec for dynamic event behavior.

DatastoreProjectConfig and ModelsProjectConfig now expose allow_unmatched_dynamic_urls (AllowUnmatchedDynamicUrls) to control whether unmatched dynamic URLs can auto-create endpoints vs. being rejected when templates exist.

The former sync_dynamic_event_ack field is renamed to verify_dynamic_events (VerifyDynamicEvents) with the same semantics: when enabled, POST /events/dynamic waits for endpoint/subscription resolution before returning 2xx instead of acknowledging after enqueue.

^{Reviewed by Cursor Bugbot for commit bfe65d5. Bugbot is set up for automated code reviews on this repo. Configure here.}

[convoy-sdk-reviewer]

SDK reviewer app: approving a generated-paths-only diff on the regen branch. Auto-merge completes only after required status checks pass.