Feature/cluster addons enhancement

[will4j]

What type of PR is this?

/kind feature

What this PR does / why we need it:

Cluster addons enhancement:

1. Support install addons after create cluster

# skip addons when create cluster
kk create cluster --skip-install-addons -f kubesphere.yaml
# install addons after cluster create success
kk alpha create phase addons -f kubesphere.yaml

2. Support install specific addons

For example:

spec:
  addons:
    - name: csi-driver-nfs
      namespace: storage
      sources:
        chart:
          # https://artifacthub.io/packages/helm/csi-driver-nfs/csi-driver-nfs
          release: csi-driver-nfs
          path: ./addons/csi-driver-nfs
    - name: metrics-server
      namespace: monitoring
      sources:
        chart:
          # https://artifacthub.io/packages/helm/metrics-server/metrics-server
          release: metrics-server
          path: ./addons/metrics-server
    - name: ingress-nginx
      namespace: network
      sources:
        chart:
          # https://artifacthub.io/packages/helm/ingress-nginx/ingress-nginx
          release: ingress-nginx
          path: ./addons/ingress-nginx

# only install csi-driver-nfs and metrics-server
kk alpha create phase addons -f kubesphere.yaml csi-driver-nfs metrics-server

3. Support preInstall & postInstall scripts of addon
   example below prepare node dir before addon installation

spec:
  addons:
    - name: my-addons
      namespace: my-addons
      preInstall:
        - name: Prepare addon directory
          role: my-addons
          bash: /bin/bash -x prepare_addon_dir.sh
          materials:
            - ./scripts/prepare_addon_dir.sh

Which issue(s) this PR fixes:

Fixes #

Special notes for reviewers:

Does this PR introduced a user-facing change?

Add `kk alpha create phase addons` for addons installation.

Additional documentation, usage docs, etc.:

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
1.2% Duplication on New Code

See analysis details on SonarCloud

[will4j]

/assign @pixiake

[pixiake]

@will4j Thanks for this contributions !
/lgtm
/approve

[ks-ci-bot]

LGTM label has been added.

Git tree hash: ee6d7c4dbe37f5e0d967c64098cf62efdbf4568d

[ks-ci-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: pixiake, will4j

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[antikilahdjs]

@will4j thank you so much for the code.

I just wondering know if is it possible add my own repo as example, I have a gitlab with all helm and I would like to install from my repo instead public ones. So, is it a option to include token or something like that? Tks