ROX-29845: Add start-console script to enable local plugin dev

[dvail]

Description

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User-facing documentation

• CHANGELOG.md is updated OR update is not needed
• documentation PR is created and is linked above OR is not needed

Testing and quality

• the change is production ready: the change is GA, or otherwise the functionality is gated by a feature flag
• CI results are inspected

Automated testing

• added unit tests
• added e2e tests
• added regression tests
• added compatibility tests
• modified existing tests

How I validated my change

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[dvail]

This change is part of the following stack:

• chore(ui): Handle encoded and unencoded params in horizontal nav #16074
  • ROX-29846: Reverts the UI to rr5 compat layer for OCP compatibility #16055
    • ROX-29843: Minimal webpack config to build OCP dynamic plugin #15944
      • ROX-29845: Add start-console script to enable local plugin dev #16094 ◀
        • ROX-29844: Add configuration of base URL in plugin requests #16097

_{Change managed by git-spice.}

[openshift-ci]

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
You can still manually trigger a test run with /test all

[red-hat-konflux]

Caution

There are some errors in your PipelineRun template.

PipelineRun	Error
quay-proxy	no kind "ImageDigestMirrorSet" is registered for version "config.openshift.io/v1" in scheme "k8s.io/client-go/kubernetes/scheme/register.go:83"

[dvail]

The changes here aren't strictly related to the work in this PR, but I'm including them since I already had the work done as part of a test. This allows us to customize the name and role used for access tokens, with the default remaining the same as it is now.

[rhacs-bot]

Images are ready for the commit at 0e16c8e.

To use with deploy scripts, first export MAIN_IMAGE_TAG=4.9.x-257-g0e16c8e9cd.