adding ai_economist for modding

ai_economist/foundation/__init__.py

@@ -0,0 +1,18 @@
+# Copyright (c) 2020, salesforce.com, inc.
+# All rights reserved.
+# SPDX-License-Identifier: BSD-3-Clause
+# For full license text, see the LICENSE file in the repo root
+# or https://opensource.org/licenses/BSD-3-Clause
+
+from ai_economist.foundation import utils
+from ai_economist.foundation.agents import agent_registry as agents
+from ai_economist.foundation.components import component_registry as components
+from ai_economist.foundation.entities import endogenous_registry as endogenous
+from ai_economist.foundation.entities import landmark_registry as landmarks
+from ai_economist.foundation.entities import resource_registry as resources
+from ai_economist.foundation.scenarios import scenario_registry as scenarios
+
+
+def make_env_instance(scenario_name, **kwargs):
+    scenario_class = scenarios.get(scenario_name)
+    return scenario_class(**kwargs)