Add support for Pre-Translation Batch Operations

[andrii-bodnar]

The Crowdin API adds a Pre-Translation Batch Operations method: PATCH /projects/{projectId}/pre-translations. It accepts a JSON Patch document (RFC 6902) to update multiple pre-translations in one request (e.g. change status or priority). API client libraries should expose this endpoint so consumers can perform batch updates on pre-translations via the SDK.

References:

• Pre-Translation Batch Operations