fix(utils): move file to utils package

[cre8]

Signed-off-by: Mirko Mollik mirko.mollik@fit.fraunhofer.de

What is being changed

I moved the jwk util class to the util package based on a discussion with @mirceanis on discord.

Quality

Check all that apply:

• [X] I want these changes to be integrated
• [X] I successfully ran pnpm i, pnpm build, pnpm test, pnpm test:browser locally.
• [X] I allow my PR to be updated by the reviewers (to speed up the review process).
• [ ] I added unit tests.
• [ ] I added integration tests.
• [X] I did not add automated tests because I only moved existing files, and I am aware that a PR without tests will likely get rejected.

[codecov-commenter]

Codecov Report

Attention: 6 lines in your changes are missing coverage. Please review.

Comparison is base (462735d) 85.89% compared to head (c18cd1f) 85.45%.

Files	Patch %	Lines
packages/did-provider-jwk/src/jwk-did-provider.ts	53.84%	6 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## next #1298 +/- ## ========================================== - Coverage 85.89% 85.45% -0.45% ========================================== Files 170 170 Lines 18939 18926 -13 Branches 2137 2112 -25 ========================================== - Hits 16268 16173 -95 - Misses 2671 2753 +82 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.