api: implementing some ops of compaction manager api
api: implementing some ops of compaction manager api

Signed-off-by: Raphael S. Carvalho <1e2942cea40e3b4d2162dfcd9e53e41c05a84d22@cloudius-systems.com>

dwdm/scylla,senseb/scylla,asias/scylla,linearregression/scylla,raphaelsc/scylla,glommer/scylla,phonkee/scylla,eklitzke/scylla,scylladb/scylla,victorbriz/scylla,raphaelsc/scylla,dwdm/scylla,glommer/scylla,asias/scylla,rentongzhang/scylla,avikivity/scylla,scylladb/scylla,kangkot/scylla,tempbottle/scylla,senseb/scylla,capturePointer/scylla,kangkot/scylla,gwicke/scylla,justintung/scylla,phonkee/scylla,capturePointer/scylla,avikivity/scylla,kjniemi/scylla,bowlofstew/scylla,justintung/scylla,duarten/scylla,aruanruan/scylla,rluta/scylla,glommer/scylla,kangkot/scylla,bowlofstew/scylla,kjniemi/scylla,victorbriz/scylla,gwicke/scylla,phonkee/scylla,eklitzke/scylla,capturePointer/scylla,linearregression/scylla,avikivity/scylla,rluta/scylla,rentongzhang/scylla,guiquanz/scylla,respu/scylla,guiquanz/scylla,gwicke/scylla,stamhe/scylla,shaunstanislaus/scylla,guiquanz/scylla,kjniemi/scylla,respu/scylla,tempbottle/scylla,senseb/scylla,stamhe/scylla,wildinto/scylla,duarten/scylla,scylladb/scylla,acbellini/scylla,asias/scylla,tempbottle/scylla,rentongzhang/scylla,linearregression/scylla,raphaelsc/scylla,acbellini/scylla,wildinto/scylla,acbellini/scylla,stamhe/scylla,shaunstanislaus/scylla,respu/scylla,duarten/scylla,rluta/scylla,wildinto/scylla,victorbriz/scylla,justintung/scylla,shaunstanislaus/scylla,dwdm/scylla,aruanruan/scylla,bowlofstew/scylla,scylladb/scylla,aruanruan/scylla,eklitzke/scylla