Make DB modules to use KvSchema

These modules can be modified to use the KvSchema module and unify how telemetry is collected + free methods.

- [ ] Blob DB
- [ ] Block DB
- [ ] Block states
- [ ] State DB
- [ ] Metadata
- [ ] Operations collector
- [ ] SubnetInfo
- [ ] Block by slot (now part of block db)
- [ ] Block status by root.