Cicero should not allow stateful clause templates without an init method

[adrianffletcher]

Describe the bug
If a stateful smart clause template has a state.json file then cicero execute will run fine. However when the smart clause template is run it will get a runtime exception as the state has not been initialized.

To Reproduce
Run the attached .cta file.
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Expected behavior
cicero parse should produce an error if there is state accessed but no init method.

Screenshots
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Additional context
Cicero 0.13