Remove .compact() operation and discuss interaction between optimize and replication

[osopardo1]

As discussed in issue #294 , we should remove the compact() operation from the QbeastTable API.

Also, right now replication is out of the scope. (See issue #282 ) But tests keep treating the optimize operation as the replication of the index.

We should understand if it's necessary to englobe everything in the same interface or if we can split between:

QbeastTable.optimize()
QbeastTable.replicate()
QbeastTable.analyze()