More info in CompactionServiceJobInfo and CompactionJobStats (#13029)

More info in CompactionServiceJobInfo and CompactionJobStats (#13029)

Summary:
Add the following to the `CompactionServiceJobInfo`
- compaction_reason
- is_full_compaction
- is_manual_compaction
- bottommost_level

Added `is_remote_compaction` to the `CompactionJobStats` and set initial values to avoid UB for uninitialized values.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/13029

Test Plan:
```
./compaction_service_test --gtest_filter="*CompactionInfo*"
```

Reviewed By: anand1976

Differential Revision: D63322878

Pulled By: jaykorean

fbshipit-source-id: f02a66ca45e660b9d354a43837d8ec6beb7621fb