feat: add cosi helm chart

[takirala]

What type of PR is this?

Adding a cosi helm chart which will be consumed by CAREN
https://jira.nutanix.com/browse/NCN-104827

What this PR does/ why we need it:

~/git/output/daily ❯ k get crds|grep objectstorage                                                                                                13:53:53
bucketaccessclasses.objectstorage.k8s.io                                        2024-12-18T21:47:13Z
bucketaccesses.objectstorage.k8s.io                                             2024-12-18T21:47:13Z
bucketclaims.objectstorage.k8s.io                                               2024-12-18T21:47:13Z
bucketclasses.objectstorage.k8s.io                                              2024-12-18T21:47:13Z
buckets.objectstorage.k8s.io                                                    2024-12-18T21:47:13Z
~/git/output/daily ❯ k get po -ncontainer-object-storage-system                                                                                   13:54:02
NAME                                                   READY   STATUS    RESTARTS   AGE
container-object-storage-controller-7f9f89fd45-qkfcg   1/1     Running   0          4m43s

Tested this on daily cluster:

apiVersion: helm.toolkit.fluxcd.io/v2
kind: HelmRelease
metadata:
  annotations:
    kubectl.kubernetes.io/last-applied-configuration: |
      {"apiVersion":"helm.toolkit.fluxcd.io/v2beta1","kind":"HelmRelease","metadata":{"annotations":{},"name":"takirala","namespace":"default"},"spec":{"chart":{"spec":{"chart":"cosi","sourceRef":{"kind":"HelmRepository","name":"takirala"},"version":"0.0.1-alpha.1"}},"interval":"10m","targetNamespace":"kommander"}}
    reconcile.fluxcd.io/requestedAt: "2024-12-18T13:48:35.547345-08:00"
  creationTimestamp: "2024-12-18T21:46:58Z"
  finalizers:
  - finalizers.fluxcd.io
  generation: 2
  name: takirala
  namespace: default
  resourceVersion: "1612435"
  uid: 9672dc2d-8762-4543-8aae-01cd6cecda0c
spec:
  chart:
    spec:
      chart: cosi
      reconcileStrategy: ChartVersion
      sourceRef:
        kind: HelmRepository
        name: takirala
      version: 0.0.1-alpha.1
  interval: 10m
  targetNamespace: kommander
status:
  conditions:
  - lastTransitionTime: "2024-12-18T21:49:26Z"
    message: Helm install succeeded for release kommander/kommander-takirala.v1 with
      chart [email protected]
    observedGeneration: 2
    reason: InstallSucceeded
    status: "True"
    type: Ready
  - lastTransitionTime: "2024-12-18T21:49:26Z"
    message: Helm install succeeded for release kommander/kommander-takirala.v1 with
      chart [email protected]
    observedGeneration: 2
    reason: InstallSucceeded
    status: "True"
    type: Released
  helmChart: default/default-takirala
  history:
  - appVersion: 0.0.1-alpha.1
    chartName: cosi
    chartVersion: 0.0.1-alpha.1
    configDigest: sha256:e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
    digest: sha256:96ed7b0aee819636016d9492b402dacc74c3358ed77743576f9ee87c653c39f4
    firstDeployed: "2024-12-18T21:49:24Z"
    lastDeployed: "2024-12-18T21:49:24Z"
    name: kommander-takirala
    namespace: kommander
    status: deployed
    version: 1
  lastAttemptedConfigDigest: sha256:e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
  lastAttemptedGeneration: 2
  lastAttemptedReleaseAction: install
  lastAttemptedRevision: 0.0.1-alpha.1
  lastHandledReconcileAt: "2024-12-18T13:48:35.547345-08:00"
  observedGeneration: 2
  storageNamespace: default

Which issue(s) this PR fixes:

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

Checklist

• If a chart is changed, the chart version is correctly incremented.
• The commit message explains the changes and why are needed.
• The code builds and passes lint/style checks locally.
• The relevant subset of integration tests pass locally.
• The core changes are covered by tests.
• The documentation is updated where needed.