Add k8gb to k0rdent catalog

[ytsarev]

https://catalog.k0rdent.io/latest/contribute/

[aryasoni98]

@ytsarev I’m happy to work on this! Could you please assign the issue to me?

[ytsarev]

@aryasoni98 done, thanks a lot for your help! Please be aware that we are moving the repos location and apiversion group around in preparation to Incubation. It might affect catalog metadata after the switch

#2180
#2195

[aryasoni98]

Approach

1. Submit the catalog contribution now using the current k8gb Helm chart (v0.18.1, https://k8gb.io/).
2. Add a note in the k0rdent PR that k8gb is preparing for CNCF Incubation and that metadata may need updates after Switch to vendor-neutral API group #2180 (API group) and Switch to vendor neutral OCI registry and repository #2195 Phase 2 (OCI registry).
3. Avoid CRD examples in the catalog metadata for now to reduce impact from Switch to vendor-neutral API group #2180.
4. Plan follow-up updates once Switch to vendor-neutral API group #2180 and Switch to vendor neutral OCI registry and repository #2195 Phase 2 land.

Deliverables

Item	Status
apps/k8gb/assets/k8gb-icon-color.svg	Pending
apps/k8gb/charts/st-charts.yaml (k8gb v0.18.1)	Pending
apps/k8gb/data.yaml (metadata, no CRD examples)	Pending
apps/k8gb/example/Chart.yaml and values.yaml	Pending
apps/k8gb/hunspell_dict.txt	Pending

Steps to execute

1. Fork k0rdent/catalog.
2. Copy contrib/k0rdent-catalog/apps/k8gb/ into the fork as apps/k8gb/.
3. Run chart_ctl.py generate k8gb in the catalog fork.
4. Run spell check and fix any issues.
5. Open a PR to k0rdent/catalog with a note about the upcoming migrations.

Rationale

• Current contribution is valid and uses the existing chart.
• Migration timelines for Switch to vendor-neutral API group #2180 and Switch to vendor neutral OCI registry and repository #2195 are uncertain.
• Catalog can be updated later when those changes land.
• No CRD examples in metadata keeps impact from Switch to vendor-neutral API group #2180 low.

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@ytsarev - Does this approach work for you? I’ll proceed once you approve.