Added get_sync_progress() method

[mitchhs12]

Summary

Adds get_sync_progress() method to the Python Admin API client to fetch sync progress for a dataset version.

Changes

Added SyncProgressResponse and TableSyncProgress Pydantic models
Added DatasetsClient.get_sync_progress(namespace, name, revision) method

Usage

from amp.admin import AdminClient

client = AdminClient('http://localhost:1610')
progress = client.datasets.get_sync_progress('_', 'eth_firehose', 'latest')

for table in progress.tables:
    print(f'{table.table_name}: block {table.current_block}, status: {table.job_status}')

Reference:

Implements Python client for edgeandnode/amp#1528 (sync-progress Admin API endpoint)