Add OpenAPI generation xtask

controller/src/context.rs

@@ -0,0 +1,13 @@
+pub struct ControllerContext {}
+
+impl ControllerContext {
+    pub fn new() -> ControllerContext {
+        ControllerContext {}
+    }
+}
+
+impl Default for ControllerContext {
+    fn default() -> Self {
+        Self::new()
+    }
+}