Jenkins percy configuration

[a-arias]

Summary

Adds ability to run visual tests on CI and send build to percy dashboard.

Occurred changes and/or fixed issues

Technical notes summary

Areas or cases that should be tested

Areas which could experience regressions

Screenshot/Video

Checklist

• The PR is linked to an issue and the linked issue has a Milestone, or no issue is needed
• The PR has a Milestone
• The PR template has been filled out
• The PR has been self reviewed
• The PR has a reviewer assigned
• The PR has automated tests or clear instructions for manual tests and the linked issue has appropriate QA labels, or tests are not needed
• The PR has reviewed with UX and tested in light and dark mode, or there are no UX changes

[izaac]

Dep: rancherlabs/corral-packages#74

[yonasberhe23]

LGTM so I'll go ahead and approve. But I we may need to backport these changes to older dashboard release branches so we don't run into issues with Jenkins recurring runs