docs: add inherit oam app example

Signed-off-by: Peefy <[email protected]>

Author: Peefy

examples/kubevela/inherit-oam-app/kcl.mod

@@ -0,0 +1,7 @@
+[package]
+name = "inherit-oam-app"
+edition = "v0.10.0"
+version = "0.0.1"
+
+[dependencies]
+oam = "0.2.1"

examples/kubevela/inherit-oam-app/kcl.mod.lock

@@ -0,0 +1,10 @@
+[dependencies]
+  [dependencies.k8s]
+    name = "k8s"
+    full_name = "k8s_1.31.2"
+    version = "1.31.2"
+  [dependencies.oam]
+    name = "oam"
+    full_name = "oam_0.2.1"
+    version = "0.2.1"
+    sum = "bz5HT/ggMm6heYVUOaZd5mOLIv/q2jicXupv0ChDlsE="

examples/kubevela/inherit-oam-app/main.k

@@ -0,0 +1,22 @@
+import oam
+
+schema MyApplication(oam.Application):
+    metadata.annotations = {
+        "some-key" = "some-value"
+    } # Extend default values
+
+    check:
+        "some-key" in metadata.annotations if metadata.annotations # Extend validation rules
+
+MyApplication {
+    metadata.name = "kcl-play-svc"
+    spec.components = [{
+        name = metadata.name
+        type = "webservice"
+        properties = {
+            image = "kcllang/kcl"
+            ports = [{port = 80, expose = True}]  
+            cmd = ["kcl", "play"]
+        }
+    }]
+}