Add query planning typedefs (#1013)

* add query planning typedefs

* update pipfile lock

* make backend type an enum

* typing copilot tighten

* update match typedef name

Co-authored-by: Predrag Gruevski <[email protected]>

* typo

Co-authored-by: Predrag Gruevski <[email protected]>

* update interpreter typedef name

Co-authored-by: Predrag Gruevski <[email protected]>

* document deserialization limitation

Co-authored-by: Selene Chew <[email protected]>
Co-authored-by: Predrag Gruevski <[email protected]>

Author: 3 people

Pipfile

@@ -40,6 +40,7 @@ sphinx = ">=1.8,<2"
 
 [packages]  # Make sure to keep in sync with setup.py requirements.
 ciso8601 = ">=2.1.3,<3"
+dataclasses-json = ">=0.5.2,<0.6"
 funcy = ">=1.7.3,<2"
 graphql-core = ">=3.1.2,<3.2"  # minor versions sometimes contain breaking changes
 six = ">=1.10.0"