Add test cases for tables with async table services and multi-writer scenarios #392
Description
Add test fixtures (zipped hudi tables v6 and v8) to crates/test/. The test tables should cover
- COW + async clustering
- MOR + async clustering / compaction
- COW + multi-writer
- MOR + multi-writer
The test tables only need to contain timeline files. The tests can verify the right commits are read and the intended list of data files are returned by the timeline.