feat: Support for Iterator TotalItems in CouchDB

[DRK3]

Signed-off-by: Derek Trider Derek.Trider@securekey.com

[codecov]

Codecov Report

Merging #128 (af88305) into main (7c95eed) will increase coverage by 1.06%.
The diff coverage is 76.92%.

❗ Current head af88305 differs from pull request most recent head 4a12a49. Consider uploading reports for the commit 4a12a49 to get more accurate results

@@            Coverage Diff             @@
##             main     #128      +/-   ##
==========================================
+ Coverage   85.65%   86.72%   +1.06%     
==========================================
  Files          23        1      -22     
  Lines        2364      535    -1829     
==========================================
- Hits         2025      464    -1561     
+ Misses        194       45     -149     
+ Partials      145       26     -119     

Impacted Files	Coverage Δ
component/storage/couchdb/store.go	86.72% <76.92%> (-2.29%)	⬇️
component/storage/mongodb/mongodb.go
...nt/vdr/trustbloc/config/verifyingconfig/service.go
component/vdr/trustbloc/vdr.go
component/vdr/trustbloc/models/consortium.go
component/vdr/sidetree/option.go
component/vdr/orb/vdr.go
...nt/vdr/trustbloc/config/signatureconfig/helpers.go
...vdr/trustbloc/discovery/staticdiscovery/service.go
...nt/vdr/trustbloc/config/signatureconfig/service.go
... and 13 more

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