Improve manual compaction status logging (#13688)

[Ryan4253]

Summary

1. RunManualCompaction notifies the user what level is currently being compacted
2. RunManualCompaction and CompactRange logs the result of a compaction (scheduled, cancelled, skipped, can't be scheduled etc.)

Verification

Tried writing to the database then triggering manual compaction

This is the original output:

2025/04/04-10:47:23.391220 42848 [db/db_impl/db_impl_compaction_flush.cc:2176] [metadatal Manual compaction starting
<some more logs>
2025/04/04-10:47:26.003890 42848 [db/db_impl/db_impl_compaction_flush.cc:2176] [metadatal Manual compaction starting

This is the improved output:

2025/06/12-16:32:45.238721 107286 [db/db_impl/db_impl_compaction_flush.cc:2077] [metadata] Running manual compaction from level 0 to level -2
2025/06/12-16:32:45.238894 107286  [db/db_impl/db_impl_compaction_flush.cc:2181] [metadata] Scheduling compaction from level 0 to level -2
2025/06/12-16:32:45.239073 107128  [db/db_impl/db_impl_compaction_flush.cc:3639] [metadata] Manual compaction from level-0 to level-6 from (begin) .. (end); will stop at (end)
[2025-06-12T16:32:45.239716-04:00][I][event_listener.cc:92] [event_listener/compaction_begin] column family: metadata, job_id: 4, compaction reason: ManualCompaction, output compression type: no, base input level(files): 0(1), output level(files): 6(0), input bytes: 1507, output bytes: 0, is_manual_compaction: yes
<some more logs>
2025/06/12-16:32:45.255405 107286 [db/db_impl/db_impl_compaction_flush.cc:2077] [metadata] Running manual compaction from level 6 to level 6
2025/06/12-16:32:45.255418 107286 [db/compaction/compaction_picker.cc:807] [metadata] No files to compact at bottom level 6 since every file was created from a previous compaction, skipping