enable blocking specific pluggable type versions from being inserted into the log

[bobcallaway]

This will be leveraged by #973 to block v0.0.1 versions of the intoto type from being inserted into the future

@pxp928

Signed-off-by: Bob Callaway bcallaway@google.com

Summary

Release Note

Documentation

[codecov-commenter]

Codecov Report

Merging #1004 (77dcdec) into main (87c1978) will increase coverage by 0.05%.
The diff coverage is 28.57%.

@@            Coverage Diff             @@
##             main    #1004      +/-   ##
==========================================
+ Coverage   40.94%   41.00%   +0.05%     
==========================================
  Files          69       69              
  Lines        6496     6517      +21     
==========================================
+ Hits         2660     2672      +12     
- Misses       3554     3563       +9     
  Partials      282      282              

Impacted Files	Coverage Δ
cmd/rekor-cli/app/get.go	2.77% <0.00%> (ø)
pkg/api/entries.go	0.00% <0.00%> (ø)
pkg/types/types.go	0.00% <0.00%> (ø)
pkg/types/entries.go	5.08% <15.38%> (-1.17%)	⬇️
cmd/rekor-cli/app/pflag_groups.go	89.47% <66.66%> (+2.27%)	⬆️
pkg/types/rekord/v0.0.1/entry.go	49.00% <0.00%> (+0.66%)	⬆️

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