Compaction group is the data plane for tablets, so this integration
allows each tablet to have its own storage (memtable + sstables).
A crucial step for dynamic tablets, where each tablet can be worked
on independently.
There are still some inefficiencies to be worked on, but as it is,
it already unlocks further development.
```
INFO 2023-07-27 22:43:38,331 [shard 0] init - loading tablet metadata
INFO 2023-07-27 22:43:38,333 [shard 0] init - loading non-system sstables
INFO 2023-07-27 22:43:38,354 [shard 0] table - Tablet with id 0 present for ks.cf
INFO 2023-07-27 22:43:38,354 [shard 0] table - Tablet with id 2 present for ks.cf
INFO 2023-07-27 22:43:38,354 [shard 0] table - Tablet with id 4 present for ks.cf
INFO 2023-07-27 22:43:38,354 [shard 0] table - Tablet with id 6 present for ks.cf
INFO 2023-07-27 22:43:38,428 [shard 1] table - Tablet with id 1 present for ks.cf
INFO 2023-07-27 22:43:38,428 [shard 1] table - Tablet with id 3 present for ks.cf
INFO 2023-07-27 22:43:38,428 [shard 1] table - Tablet with id 5 present for ks.cf
INFO 2023-07-27 22:43:38,428 [shard 1] table - Tablet with id 7 present for ks.cf
```
Closes#14863
* github.com:scylladb/scylladb:
Kill scylla option to configure number of compaction groups
replica: Wire tablet into compaction group
token_metadata: Add this_host_id to topology config
replica: Switch to chunked_vector for storing compaction groups
replica: Generate group_id for compaction_group on demand
bd8bb5d4b1