Add blockstore precompiles

[lthibault]

⚠️ Stacks on top of #154. Merge that first.

📝 Summary

Adds two precompiles for interacting directly with the datastore (tentatively renamed to Blockstore, though this may change).

📚 References

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• [x] I have seen and agree to CONTRIBUTING.md

[lthibault]

Merge conflict is noted. Will resolve once #154 is merged in.

[metachris]

should this PR point to the branch of #154 instead of main? not sure

[lthibault]

should this PR point to the branch of #154 instead of main? not sure

@metachris I was hoping to merge these sequentially into main, to build incrementally.