Added Helm chart for argocd app of apps, made the setup more configurable

kubernetes/secrets.tf

@@ -0,0 +1,17 @@
+resource "kubernetes_secret_v1" "argocd_app_of_apps_git_repo" {
+  count      = var.install_argocd_app_of_apps_git_repo_secret ? 1 : 0
+  depends_on = [helm_release.argocd_app_of_apps]
+  metadata {
+    namespace = "argocd"
+    name      = "argocd-app-of-apps-git-repo"
+    labels = {
+      "argocd.argoproj.io/secret-type" = "repository"
+    }
+  }
+  data = {
+    type     = "git"
+    url      = var.argocd_app_of_apps_git_repo_secret_url
+    username = "git"
+    password = var.argocd_app_of_apps_git_repo_secret_token
+  }
+}