Tasks API updates - syncScope, originalWordsCount, and model fixes

Several updates landed on the Tasks API models that typed client libraries should pick up:

**New response fields:**

- `originalWordsCount` (integer) on the Task model — the number of words when the task was created, preserved when source strings are later removed (`wordsCount` reflects the current count). Both Crowdin and Crowdin Enterprise.
- `syncScope` (nullable object: `syncedWords`, `pendingWords`, `skippedWords` — all integers) on the Enterprise task models (project tasks, organization task list, user tasks). It is `null` when the task is fully synced, not shared, or the counterpart is unavailable — **Crowdin Enterprise only**.

**Type fixes:**

- Task `creatorId` corrected from string to **integer**.
- Enterprise Add Task forms: `status` corrected from integer to **string** enum (`todo`, `in_progress`).

**Edit Project Task (Enterprise):** the inter-organizational task patch `path` enum gains `/generateCostEstimate`, `/generateTranslationCost`, and `/reportSettingsTemplateId`.

Affected endpoints: **List/Add/Get/Edit Project Task** (`api.projects.tasks.getMany`/`post`/`get`/`patch`), **List Tasks** (Enterprise organization level, `api.tasks.getMany`), **List User Tasks** (`api.users.tasks.getMany` on crowdin.com).

**References:**
- [List Project Tasks](https://support.crowdin.com/developer/api/v2/#operation/api.projects.tasks.getMany)
- [Edit Task](https://support.crowdin.com/developer/api/v2/#operation/api.projects.tasks.patch)
- Crowdin Enterprise: [List Tasks](https://support.crowdin.com/developer/enterprise/api/v2/#operation/api.tasks.getMany), [Edit Task](https://support.crowdin.com/developer/enterprise/api/v2/#operation/api.projects.tasks.patch)

Start with the Go models and endpoint methods corresponding to List/Add/Get/Edit Project Task, Enterprise List Tasks, and List User Tasks. Compare the referenced Crowdin and Crowdin Enterprise API documentation with the current task fields, types, and path enum values. Done means all listed fields, nullable syncScope variants, type corrections, and Enterprise paths are represented for the affected endpoints.

Written by the indexing model from the issue text.