chore: Change DB names to be more meaningful

[bstasyszyn]

Modified some database names for consistency and to reflect what they store.

Signed-off-by: Bob Stasyszyn Bob.Stasyszyn@securekey.com

[codecov]

Codecov Report

Merging #1185 (9e85e89) into main (dd66f1b) will decrease coverage by 0.04%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #1185      +/-   ##
==========================================
- Coverage   88.35%   88.30%   -0.05%     
==========================================
  Files         171      171              
  Lines       16831    16831              
==========================================
- Hits        14871    14863       -8     
- Misses       1232     1239       +7     
- Partials      728      729       +1     

Impacted Files	Coverage Δ
pkg/activitypub/store/ariesstore/ariesstore.go	86.77% <ø> (ø)
pkg/store/anchorstatus/store.go	96.51% <ø> (ø)
pkg/anchor/linkstore/linkstore.go	95.12% <100.00%> (ø)
pkg/store/cas/cas.go	86.76% <100.00%> (ø)
...pub/service/inbox/httpsubscriber/httpsubscriber.go	90.90% <0.00%> (-9.10%)	⬇️

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