docs: add kubernetes and workflow documentation

k8s/argocd/application-prod.yaml

@@ -0,0 +1,19 @@
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: vendaweb-api-prod
+  namespace: argocd
+spec:
+  project: default
+  source:
+    repoURL: https://git.simplifiquehc.com.br/simplifique/Vendaweb-api.git
+    targetRevision: main
+    path: k8s/overlays/prod
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: vendaweb-api
+  syncPolicy:
+    automated:
+      selfHeal: true
+    syncOptions:
+      - CreateNamespace=true