Move Cloud Run image property to GCP config struct

Signed-off-by: Tihomir Jovicic <tihomir.jovicic.develop@gmail.com>

examples/cloudrun-app/main.cue

@@ -0,0 +1,20 @@
+package main
+
+import (
+	"dagger.io/gcp"
+	"dagger.io/gcp/cloudrun"
+)
+
+// Cloud Run service name
+serviceName: *"cloudrun-test" | string @dagger(input)
+
+// Image name
+image: string @dagger(input)
+
+gcpConfig: gcp.#Config
+
+deploy: cloudrun.#Deploy & {
+	"serviceName": serviceName
+	"image":       image
+	config:        gcpConfig
+}