feat: export declaration filename helper

[sdstolworthy]

Problem

This helper is used in external packages to derive the correct declaration filename of a generated component file.

Solution

Additional Notes

Links

Ticket

GitHub issue:

Other links

Verification

Manual tests

Automated tests

• Unit tests added/updated
• E2E tests added/updated
• N/A - (provide a reason)
• deferred - (provide GitHub issue for tracking)

Housekeeping

• No non-essential console logs
• All new files contain license notice

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

[codecov-commenter]

Codecov Report

Merging #1109 (ba2919e) into main (a3ba324) will increase coverage by 0.00%.
Report is 28 commits behind head on main.
The diff coverage is 100.00%.

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@@           Coverage Diff           @@
##             main    #1109   +/-   ##
=======================================
  Coverage   93.88%   93.89%           
=======================================
  Files         124      124           
  Lines        5842     5843    +1     
  Branches     1775     1775           
=======================================
+ Hits         5485     5486    +1     
  Misses        339      339           
  Partials       18       18           

Files	Coverage Δ
packages/codegen-ui-react/lib/index.ts	100.00% <100.00%> (ø)

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