cue modules: move stdlib to pkg/alpha.dagger.io

In preparation for Europa, we will vendor multiple CUE modules:

- `pkg/alpha.dagger.io`: legacy non-europa packages
- `pkg/dagger.io`: core Europa packages
- `pkg/universe.dagger.io`: Europa universe

Signed-off-by: Andrea Luzzardi <aluzzardi@gmail.com>

pkg/alpha.dagger.io/argocd/app.cue

@@ -0,0 +1,48 @@
+package argocd
+
+import (
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/os"
+)
+
+// Create an ArgoCD application
+#App: {
+	// ArgoCD configuration
+	config: #Config
+
+	// App name
+	name: dagger.#Input & {string}
+
+	// Repository url (git or helm)
+	repo: dagger.#Input & {string}
+
+	// Folder to deploy
+	path: dagger.#Input & {"." | string}
+
+	// Destination server
+	server: dagger.#Input & {*"https://kubernetes.default.svc" | string}
+
+	// Destination namespace
+	namespace: dagger.#Input & {*"default" | string}
+
+	os.#Container & {
+		image: #CLI & {
+			"config": config
+		}
+		command: #"""
+				argocd app create "$APP_NAME" \
+					--repo "$APP_REPO" \
+					--path "$APP_PATH" \
+					--dest-server "$APP_SERVER" \
+					--dest-namespace "$APP_NAMESPACE"
+			"""#
+		always: true
+		env: {
+			APP_NAME:      name
+			APP_REPO:      repo
+			APP_PATH:      path
+			APP_SERVER:    server
+			APP_NAMESPACE: namespace
+		}
+	}
+}