Lily actor extractors are well tested

### Description
Lily's `tasks/actorstate` package contains a set of actor extractors used to extract the state of different actors from the Filecoin network. Each actor extractor needs testing to exercise its logic ensuring it produces the expected model.

### Acceptance criteria
- [ ] Decide on a testing strategy, either via mocking the calls each extractor makes, or by vectorizing actor state from the chain and running an extractor over the vector.
- [ ] Implement testing for each extractor type:
- [ ] account actor
- [ ] init actor
- [ ] market actor
- [ ] miner actor
- [ ] multisig actor
- [ ] power actor
- [ ] raw actor state
- [ ] reward actor
- [ ] verifreg actor