chore: migrate to pnpm

[dkarpele]

I tested commands from Readme.md (Option 1) and package.json:

pnpm install
pnpm run start
pnpm run start-console

[keithchong]

Thanks Denis. For app-4 in your screenshot, which test case (repo) did you use and how did you create/deploy it?

[dkarpele]

Thanks Denis. For app-4 in your screenshot, which test case (repo) did you use and how did you create/deploy it?

I created a simple file
% oc apply -f app.yaml

apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
  name: app-4
  namespace: openshift-gitops
  finalizers:
    - resources-finalizer.argocd.argoproj.io
spec:
  project: default
  source:
    repoURL: https://github.com/argoproj-labs/argocd-image-updater/
    path: test/e2e/testdata/005-public-guestbook
    targetRevision: HEAD
  destination:
    server: https://kubernetes.default.svc
    namespace: openshift-gitops-operator
  syncPolicy:
    automated: {}
    retry:
      limit: 2