fix: remove request id when calling the sync api

[beaussan]

Description

This PR introduces changes to the restClient module to handle POST requests to the sync API endpoint differently.

Resolves #257

Changes

• Export the API_SYNC_BASE_URI constant from the endpoints module to make it accessible in other modules
• Modify the request function in restClient to skip generating a random request ID for POST requests to the sync API endpoint
• Add a test case in restClient.test.ts to verify that a random request ID is not created for POST requests to the sync API endpoint

Rationale

The sync API endpoint does not allow a request ID in the CORS headers. To accommodate this, the request function now checks if the baseUri includes the API_SYNC_BASE_URI before generating a random request ID for POST requests. This ensures that POST requests to the sync API endpoint do not include a request ID, while other POST requests continue to generate a random request ID if none is provided.

Testing

A new test case has been added to restClient.test.ts to verify that a random request ID is not created when making a POST request to the sync API endpoint.

Please review the changes and provide any feedback or suggestions.

[scottlovegrove]

This has been released with version 3.0.3