feat(entities-plugins): add metering-and-plugin form

[TT1228]

Summary

Add custom metering-and-plugin form

[kongponents-bot]

🔴 PR audit failed. 🔴

🔥 No test coverage detected.

This PR does not include any test coverage changes, but it modifies source code. Please add appropriate tests to cover the changes made in this PR.

If you believe this is a false positive or if there are valid reasons for not including test coverage changes, please request an exemption by adding the test-coverage-exempt label to the PR and ensure it is approved by one of those managers jillztom, nateslo, erichsend, lahabana, hangrao, ryanmoore, elen4, DaniellaFreese, mfollett, ValeryG.

[kongponents-bot]

Preview components from this PR in consuming application

In consuming application project install preview versions of shared packages generated by this PR:

@kong-ui-public/analytics-utilities@pr-3058
@kong-ui-public/app-layout@pr-3058
@kong-ui-public/error-boundary@pr-3058
@kong-ui-public/monaco-editor@pr-3058
@kong-ui-public/page-layout@pr-3058
@kong-ui-public/sandbox-layout@pr-3058
@kong-ui-public/split-pane@pr-3058
@kong-ui-public/entities-shared@pr-3058
@kong-ui-public/document-viewer@pr-3058
@kong-ui-public/spec-renderer@pr-3058
@kong-ui-public/analytics-config-store@pr-3058
@kong-ui-public/analytics-geo-map@pr-3058
@kong-ui-public/portal-analytics-bridge@pr-3058
@kong-ui-public/documentation@pr-3058
@kong-ui-public/forms@pr-3058
@kong-ui-public/entities-certificates@pr-3058
@kong-ui-public/entities-consumer-credentials@pr-3058
@kong-ui-public/entities-consumer-groups@pr-3058
@kong-ui-public/entities-consumers@pr-3058
@kong-ui-public/entities-data-plane-nodes@pr-3058
@kong-ui-public/entities-gateway-services@pr-3058
@kong-ui-public/entities-key-sets@pr-3058
@kong-ui-public/entities-keys@pr-3058
@kong-ui-public/entities-snis@pr-3058
@kong-ui-public/entities-upstreams-targets@pr-3058
@kong-ui-public/entities-vaults@pr-3058
@kong-ui-public/analytics-metric-provider@pr-3058
@kong-ui-public/expressions@pr-3058
@kong-ui-public/entities-redis-configurations@pr-3058
@kong-ui-public/analytics-chart@pr-3058
@kong-ui-public/entities-routes@pr-3058
@kong-ui-public/dashboard-renderer@pr-3058
@kong-ui-public/entities-plugins@pr-3058

[Copilot]

Pull request overview

Adds a custom free-form UI for the metering-and-billing plugin in entities-plugins, including new shared collapsible UI behavior and i18n strings to support the new form.

Changes:

• Register metering-and-billing as an experimental free-form and expose MeteringAndBillingForm from the free-form component barrel.
• Add MeteringAndBillingForm.vue implementing a tailored layout with sectioned/collapsible configuration and field renderer overrides.
• Enhance shared free-form components (new CollapsibleSection, ArrayField collapsible support, BooleanField attribute forwarding) and add English locale strings.

Reviewed changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
packages/entities/entities-plugins/src/utils/free-form.ts	Adds experimental mapping for metering-and-billing to use the new form component.
packages/entities/entities-plugins/src/locales/en.json	Adds i18n strings for metering-and-billing form sections/fields.
packages/entities/entities-plugins/src/components/free-form/shared/CollapsibleSection.vue	New shared collapsible section wrapper used by the metering/billing form.
packages/entities/entities-plugins/src/components/free-form/shared/BooleanField.vue	Forwards non-prop attributes to KCheckbox (enables label/description overrides).
packages/entities/entities-plugins/src/components/free-form/shared/ArrayField.vue	Adds optional collapsible behavior and related UI/structure changes.
packages/entities/entities-plugins/src/components/free-form/MeteringAndBilling/MeteringAndBillingForm.vue	New custom form implementation for metering-and-billing plugin.
packages/entities/entities-plugins/src/components/free-form/MeteringAndBilling/index.ts	Barrel export for the new form.
packages/entities/entities-plugins/src/components/free-form/index.ts	Exposes MeteringAndBillingForm for dynamic free-form resolution.
packages/entities/entities-plugins/sandbox/pages/PluginFormPage.vue	Enables the experimental free-form for metering-and-billing in the sandbox.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

The optional ArrayField collapse toggle is icon-only and currently has no accessible name/state. Please add aria-expanded bound to expanded, and either an aria-label or aria-labelledby pointing at the field label; aria-controls for the content region would also improve screen reader behavior.