mgr/dashboard: Display users current bucket quota usage

mgr/dashboard: Display users current bucket quota usage
Fixes: https://tracker.ceph.com/issues/45011
Signed-off-by: Avan Thakkar <athakkar@redhat.com>
(cherry picked from commit 4fabba0bb772d480dcddc83272c83e7714726fc1)

 Conflicts:
	src/pybind/mgr/dashboard/frontend/src/app/ceph/cluster/osd/osd-list/osd-list.component.html
	src/pybind/mgr/dashboard/frontend/src/app/ceph/pool/pool-list/pool-list.component.html
	src/pybind/mgr/dashboard/frontend/src/app/ceph/rgw/rgw-bucket-list/rgw-bucket-list.component.spec.ts
	src/pybind/mgr/dashboard/frontend/src/app/ceph/rgw/rgw-bucket-list/rgw-bucket-list.component.ts
	src/pybind/mgr/dashboard/frontend/src/app/shared/components/usage-bar/usage-bar.component.ts
   - Resolved conflicts due to variable name change and few other import conflicts.