[Relay] Move prelude to text format (#3939)

[Relay] Move prelude to text format (#3939)

* Fix parser

* Doc fix

* Add module utility functions necessary for prelude

* Implement prelude in text format

* Remove programmatically constructed prelude defs

* Fix 0-arity type conses in pretty printer and test

* Make prelude loading backwards-compatible

* Fix patterns

* Improve some prelude defs

* Fix `ImportFromStd`

It needs to also follow the "add unchecked, add checked" pattern

* Lint roller

* Woops

* Address feedback

* Fix `test_list_constructor` VM test

* Fix `test_adt.py` failures