chore: fix circular dependencies related to types.ts

[schaeferka]

Description

There are circular dependencies related to types.ts that should be fixed so that there are no circular dependencies.
...

End to End Test:
(See Pepr Excellent Examples)

Related Issue

Fixes #1336

Relates to #

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Other (security config, docs update, etc)

Checklist before merging

• Unit, Journey, E2E Tests, docs, adr added or updated as needed
• Contributor Guide Steps followed

[codecov]

Codecov Report

Attention: Patch coverage is 85.71429% with 4 lines in your changes missing coverage. Please review.

Project coverage is 85.40%. Comparing base (7260348) to head (8611dcb).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
src/lib/capability.ts	42.85%	3 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1339      +/-   ##
==========================================
- Coverage   85.64%   85.40%   -0.24%     
==========================================
  Files          31       30       -1     
  Lines        1449     1453       +4     
  Branches      319      344      +25     
==========================================
  Hits         1241     1241              
+ Misses        206      193      -13     
- Partials        2       19      +17     

Files with missing lines	Coverage Δ
src/lib/adjudicators.ts	100.00% <100.00%> (ø)
src/lib/enums.ts	100.00% <100.00%> (ø)
src/lib/filter.ts	94.73% <100.00%> (ø)
src/lib/finalizer.ts	100.00% <100.00%> (ø)
src/lib/mutate-request.ts	100.00% <100.00%> (ø)
src/lib/validate-request.ts	100.00% <100.00%> (ø)
src/lib/watch-processor.ts	79.20% <100.00%> (ø)
src/lib/capability.ts	92.54% <42.85%> (-2.36%)	⬇️

... and 3 files with indirect coverage changes

[schaeferka]

Fix is based on using interfaces for PeprMutateRequest and PeprValidateRequest in types.ts and updating the implementation of both.

[schaeferka]

Closed to try a different approach