[Fix] Updating WebSocket Schema and Methods

[antonio-amjr]

Overview

Fixing the WebSocket schema and some methods to support the messages received from the server.
Currently, the income messages are including _index instead of _id to update test cases, steps and suites.

Therefore, the schema were updated and the methods are now using index logic to return the correct logging.

Developer Testing

Before, the log returned errors about the WebSocket messages, not showing the steps flow correctly:

[...]
Received invalid socket message: {"type": "test_update", "payload": {"test_type": "Test Suite", "body": {"test_suite_execution_index": 0, "state": "passed", "errors": []}}}
[...]
Test Run [PASSED]
Log output in: './output_logs/test_run_Dev_CLI_Test.log'

After the update, the logs from TH during a CLI run now completes and show the results accordingly:

[...]
[1701194908.023421][3588060:3588060] CHIP:EM: Found matching exchange: 25442r, Delegate: (nil)
[1701194908.023440][3588060:3588060] CHIP:EM: Rxd Ack; Removing MessageCounter:159778699 from Retrans Table on exchange 25442r
[1701194908.023445][3588060:3588060] CHIP:IN: SecureSession[0xaaaaea9e2300]: Released - Type:2 LSID:28339
  - FirstChipToolSuite [PASSED]
Test Run [PASSED]
Log output in: './output_logs/test_run_Dev_CLI_Test.log'