Add templates and tests

src/mcp_server_cli/templates/example_tool.json

@@ -0,0 +1,24 @@
+{
+  "name": "example_tool",
+  "description": "An example tool definition in JSON format",
+  "input_schema": {
+    "type": "object",
+    "properties": {
+      "message": {
+        "type": "string",
+        "description": "The message to process",
+        "required": true
+      },
+      "uppercase": {
+        "type": "boolean",
+        "description": "Convert to uppercase",
+        "default": false
+      }
+    },
+    "required": ["message"]
+  },
+  "annotations": {
+    "read_only_hint": true,
+    "destructive_hint": false
+  }
+}