restructure files/imports

Author: jjfrench

app.py

@@ -1,5 +1,5 @@
 {
-  "app": "python3 app.py",
+  "app": "python3 infrastructure/app.py",
   "watch": {
     "include": [
       "**"
@@ -29,4 +29,4 @@
       "aws-cn"
     ]
   }
-}
+}

cdk.json

@@ -0,0 +1,18 @@
+from aws_cdk import App
+
+from config import build_app_config
+from pgStacInfra import pgStacInfraStack
+from vpc import VpcStack
+
+pgStacInfra = App()
+
+app_config = build_app_config()
+
+vpc_stack = VpcStack(scope=pgStacInfra, app_config=app_config)
+
+pgstac_infra_stack = pgStacInfraStack(
+    scope=pgStacInfra,
+    vpc=vpc_stack.vpc,
+    app_config=app_config,
+)
+pgStacInfra.synth()