chore(app): extract out config parsing

[gashcrumb]

Description

This change extracts out the frontend configuration parsing functions into a separate app-utils package, to prepare making the old RHDH dynamic frontend configuration available to the new frontend system configuration bridge when it is implemented.

Which issue(s) does this PR fix

• Fixes RHIDP-8694

PR acceptance criteria

Please make sure that the following steps are complete:

• GitHub Actions are completed and successful
• Unit Tests are updated and passing
• E2E Tests are updated and passing
• Documentation is updated if necessary (requirement for new features)
• Add a screenshot if the change is UX/UI related

How to test changes / Special notes to the reviewer

There should be no apparent app behavior changes

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[github-actions]

The image is available at:

• quay.io/rhdh-community/rhdh:pr-3364
• quay.io/rhdh-community/rhdh:pr-3364-609c3229

[github-actions]

The image is available at:

• quay.io/rhdh-community/rhdh:pr-3364
• quay.io/rhdh-community/rhdh:pr-3364-5c8885b9

[github-actions]

This PR is stale because it has been open 7 days with no activity. Remove stale label or comment or this will be closed in 21 days.

[davidfestal]

@gashcrumb let me wait for your rebase, and finally start reviewing this.

[github-actions]

This PR is stale because it has been open 7 days with no activity. Remove stale label or comment or this will be closed in 21 days.

[gashcrumb]

/hold

[github-actions]

The image is available at:

• quay.io/rhdh-community/rhdh:pr-3364
• quay.io/rhdh-community/rhdh:pr-3364-a6e47842

[gashcrumb]

/unhold

[gashcrumb]

/hold
probably would be good to wait until post 1.8 to merge this, as it'll complicate back-porting changes to the frontend.

[github-actions]

The image is available at:

• quay.io/rhdh-community/rhdh:pr-3364
• quay.io/rhdh-community/rhdh:pr-3364-a4de003a

[openshift-ci]

@gashcrumb: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/e2e-tests	5c8885b	link	true	/test e2e-tests
ci/prow/e2e-ocp-helm	a4de003	link	true	/test e2e-ocp-helm

Full PR test history. Your PR dashboard.

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