Inserts or updates a mock instance at a specific state for test setup.

Use this in unit tests to setup an instance without affecting the impl_model.

@spec prepare_for_test_suite([opt()]) :: :ok

Prepares after-suite hooks that export collected implementation models.

Call this in your test_helper.exs.

It accepts the following opts:

• :instance_manager: An instance manager module. By default, it uses the configured default instance manager (see Spex). Specify this if you are starting your instance manager in your supervision tree directly.
• :impl_models_dir: Path to the directory where collected implementation models are exported after tests. By default, this is the configured implementation models directory (see Spex).