module-v2-example: add an example module to show off the new capabilities

modules/module-v2-example/index.py

@@ -0,0 +1,16 @@
+class Counter:
+    def __init__(self):
+        self.counter = 0
+
+    def call_count(self):
+        self.counter += 1
+        return self.counter.et
+
+c = Counter()
+
+def get_num():
+    return c.call_count()
+
+def process(message, path):
+    if message.text == "!v2-testing":
+        return f"Testing successful - this is call number {get_num()}"