Added producer template

src/code_generator/templates/producer_nats/wadm.yaml

@@ -0,0 +1,82 @@
+apiVersion: core.oam.dev/v1beta1
+kind: Application
+metadata:
+  name: {{ component_name }}
+spec:
+  components:
+    - name: {{ component_name }}
+      type: component
+      properties:
+        image: 
+        id: producer
+        # config: 
+        #   - name: nats-topic
+        #     properties: 
+        #       dest-topic: wasmcloud.echo.reply
+      traits:
+        - type: spreadscaler
+          properties:
+            instances: 1
+        - type: link
+          properties:
+            target: nats-producer
+            namespace: wasmcloud
+            package: messaging
+            interfaces: [consumer]
+
+    # Add a capability provider that implements `wasmcloud:messaging` using NATS
+    - name: nats-producer
+      type: capability
+      properties:
+        image: "{{ registry_url }}/{{ component_name }}:{{ version }}"
+      traits:
+        - type: link
+          properties:
+            target: {{ component_name }}
+            namespace: wasmcloud
+            package: messaging
+            interfaces: [handler]
+            source_config:
+              - name: simple-subscription
+                properties:
+                  subscriptions: {{ source_topic}}
+        - type: spreadscaler
+          properties:
+            instances: 1
+            spread:
+            {%- set weight = (100 / (targets | length)) | int -%}
+            {%- for target in targets -%}
+            - name: {{ target }}
+              weight: {{ weight }}
+              requirements:
+                host-type: {{ target }}
+            {%- endfor -%}
+
+    - name: httpserver
+      type: capability
+      properties:
+        image: ghcr.io/wasmcloud/http-server:0.23.2
+      traits:
+        # Link to Echo, and inform it to listen on port 8000
+        # on the local machine
+        - type: link
+          properties:
+            target: {{ component_name }}
+            namespace: wasmcloud
+            package: http
+            interfaces: [incoming-handler]
+            source_config:
+              - name: default-http
+                properties:
+                  address: 0.0.0.0:8000
+        - type: spreadscaler
+          properties:
+            instances: 1
+            spread:
+            {%- set weight = (100 / (targets | length)) | int -%}
+            {%- for target in targets -%}
+            - name: {{ target }}
+              weight: {{ weight }}
+              requirements:
+                host-type: {{ target }}
+            {%- endfor -%}