Main: Make openapi export store locally

This runs faster than always making a syscall to check if the env
var is set.

Signed-off-by: kingbri <bdashore3@proton.me>

endpoints/utils.py

@@ -0,0 +1,3 @@
+import os
+
+do_export_openapi = os.getenv("EXPORT_OPENAPI", "").lower() in ("true", "1")