Add workload sample files in custom resource interpreter example

Signed-off-by: Xinzhao Xu <z2d@jifangcheng.com>

examples/customresourceinterpreter/workload-propagationpolicy.yaml

@@ -0,0 +1,27 @@
+apiVersion: policy.karmada.io/v1alpha1
+kind: PropagationPolicy
+metadata:
+  name: nginx-workload-propagation
+spec:
+  resourceSelectors:
+    - apiVersion: workload.example.io/v1alpha1
+      kind: Workload
+      name: nginx
+  placement:
+    clusterAffinity:
+      clusterNames:
+        - member1
+        - member2
+    replicaScheduling:
+      replicaDivisionPreference: Weighted
+      replicaSchedulingType: Divided
+      weightPreference:
+        staticWeightList:
+          - targetCluster:
+              clusterNames:
+                - member1
+            weight: 2
+          - targetCluster:
+              clusterNames:
+                - member2
+            weight: 1

examples/customresourceinterpreter/workload.yaml

@@ -0,0 +1,16 @@
+apiVersion: workload.example.io/v1alpha1
+kind: Workload
+metadata:
+  name: nginx
+  labels:
+    app: nginx
+spec:
+  replicas: 3
+  template:
+    metadata:
+      labels:
+        app: nginx
+    spec:
+      containers:
+        - image: nginx
+          name: nginx