feat(repodb): add PageInfo to GlobalSearch and RepoListWithNewestImage results

[andaaron]

Which issue does this PR fix:
Resolves #928

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov]

Codecov Report

Merging #1121 (dab5cc1) into main (9294ebb) will increase coverage by 0.05%.
The diff coverage is 98.53%.

@@            Coverage Diff             @@
##             main    #1121      +/-   ##
==========================================
+ Coverage   89.23%   89.28%   +0.04%     
==========================================
  Files          89       89              
  Lines       18294    18370      +76     
==========================================
+ Hits        16324    16401      +77     
  Misses       1504     1504              
+ Partials      466      465       -1     

Impacted Files	Coverage Δ
pkg/regexp/regexp.go	88.88% <ø> (ø)
pkg/meta/repodb/dynamodb-wrapper/dynamo_wrapper.go	91.03% <90.47%> (+0.02%)	⬆️
pkg/meta/repodb/pagination.go	98.34% <96.77%> (+0.20%)	⬆️
pkg/api/routes.go	94.00% <100.00%> (ø)
pkg/extensions/search/cve/trivy/scanner.go	95.38% <100.00%> (+0.36%)	⬆️
pkg/extensions/search/resolver.go	87.16% <100.00%> (+0.49%)	⬆️
pkg/extensions/search/schema.resolvers.go	97.50% <100.00%> (+<0.01%)	⬆️
pkg/meta/repodb/boltdb-wrapper/boltdb_wrapper.go	89.86% <100.00%> (+0.02%)	⬆️
pkg/storage/local/local.go	82.67% <100.00%> (+0.10%)	⬆️
pkg/storage/s3/s3.go	80.18% <100.00%> (+0.05%)	⬆️
... and 5 more

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[rchincha]

lgtm