refactor(storage): latest API changes

[glimchb]

ObjectStats -> StatsObject VolumeId -> VolumeNameRef remove pc.ObjectKey

Signed-off-by: Boris Glimcher Boris.Glimcher@emc.com

[codecov[bot]]

Codecov Report

Merging #80 (a920f36) into main (65312c1) will decrease coverage by 0.57%. The diff coverage is 18.54%.

@@            Coverage Diff             @@
##             main      #80      +/-   ##
==========================================
- Coverage   56.59%   56.02%   -0.57%     
==========================================
  Files          34       33       -1     
  Lines        4488     4512      +24     
==========================================
- Hits         2540     2528      -12     
- Misses       1948     1984      +36     

Files Changed	Coverage Δ
pydpu/cli.py	74.57% <0.00%> (-11.70%)	:arrow_down:
pydpu/storage.py	53.33% <0.00%> (ø)
pydpu/proto/v1/frontend_nvme_pcie_pb2.py	44.94% <15.83%> (-4.11%)	:arrow_down:
pydpu/proto/v1/frontend_nvme_pcie_pb2_grpc.py	51.92% <75.00%> (ø)

... and 1 file with indirect coverage changes