VAPI-2714 Update the python SDK to include BRTC endpoint APIs - #280

- Implement integration tests for creating, retrieving, listing, and deleting WebRTC endpoints in `test/smoke/test_endpoints_api.py`.
- Add unit tests for models related to endpoint requests and responses, including `CreateEndpointRequestBase`, `CreateEndpointResponse`, `CreateEndpointResponseObject`, `Device`, and their respective enums in the `test/unit/models` directory.
- Ensure tests cover various scenarios including unauthorized and forbidden access attempts.
- Validate the functionality of endpoint events and status enums with dedicated unit tests.

… is not ready yet

… ready yet

…password

…emove forbidden credentials test

…WebRtcConnectionRequest, and Endpoint classes

…reateWebRtcConnectionRequest, and Endpoint classes

…-sdk into brtc-python-sdk

…sponseData; remove redundant tests from existing models

…sponse

…n with specific exceptions and adding tests for unauthorized, forbidden, and not found scenarios.

…line error scenarios

…-sdk into brtc-python-sdk

- Smoke tests: Replace has_properties with individual assertions, remove
  hamcrest dependency, add assertions for links/data/errors fields and
  all properties on response objects, remove AI-generated comments,
  reuse endpoint ID from create test in delete test
- Unit API tests: Remove pagination test, required-only props test, and
  error handling test; add assertions for tag, devices, and other fields
  on mocked response data
- Unit model tests: Add missing test files for ErrorResponse, Page,
  SipConnectionMetadata, and SipCredentials models

Generated from Claude9 with Claude Code

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

- Model tests: Replace isinstance checks with value equality for timestamps
  and add missing field assertions (endpoint_response, list_endpoints_response)
- Smoke tests: Add tag assertion on listed endpoint items in listEndpoints
- test_list_endpoints_response: Add assertions for page.total_pages and
  page.page_number, plus value checks on endpoint data fields
- Unit API tests: Replace instance_of/is_in with equal_to assertions using
  expected Prism mock values for endpoint_id, type, status, tag, token, page
  fields, and error arrays

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

…terns

- Remove unnecessary assertion in smoke test (listed_ids check)
- Replace all hamcrest matchers with plain assert statements in unit API tests
- Remove dead make_instance(include_optional) pattern from 13 model tests

Generated from Claude9 with Claude Code

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Add method (enum: GET/POST/DELETE) to link schema and id, type, source
fields to error schema per the authoritative BRTC spec. Extract
LinkMethodEnum to its own file to match codebase conventions.

Generated from Claude9 with Claude Code

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

This reverts commit a73a50e.

…pport

Use assert_that with individual matchers (equal_to, instance_of, not_none,
greater_than) to match the assertion style used across all other SDK tests.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>