Add test for kube-gcp deployment step

Signed-off-by: Tom Chauveau <tom.chauveau@epitech.eu>

docs/learn/tests/kube-gcp/deployment/input.cue

@@ -0,0 +1,19 @@
+package main
+
+import (
+	"alpha.dagger.io/git"
+)
+
+manifest: git.#Repository & {
+	remote: "https://github.com/dagger/examples.git"
+	ref:    "main"
+	subdir: "todoapp/k8s"
+}
+
+repository: git.#Repository & {
+	remote: "https://github.com/dagger/examples.git"
+	ref:    "main"
+	subdir: "todoapp"
+}
+
+registry: "gcr.io/dagger-ci/test"