Remove chia-blockchain dependency for most of chia_rs

[matt-o-how]

This PR removes imports from test_blscache.py and deletes test_program_fidelity.py.

It also removes the python running from block_record.rs by implementing pot_iterations.py inside the class

[arvidn]

this is a really nice change. However, I think it would be good to check the correctness of this against the existing python implementation. One way to do that would be to break this off into a separate PR that still relies on the chia-blockchain dependency to compare the result between the rust and python implementation. Can you think of another way to be confident in the correctness of this port?

[coveralls-official]

Pull Request Test Coverage Report for Build 12832667348

Details

• 0 of 61 (0.0%) changed or added relevant lines in 1 file are covered.
• 77 unchanged lines in 3 files lost coverage.
• Overall coverage decreased (-0.6%) to 83.854%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
crates/chia-protocol/src/block_record.rs	0	61	0.0%

Files with Coverage Reduction	New Missed Lines	%
crates/chia-protocol/src/lazy_node.rs	1	90.91%
wheel/src/run_program.rs	7	76.67%
crates/chia-protocol/src/program.rs	69	51.35%

Totals
Change from base Build 12797692864:	-0.6%
Covered Lines:	13093
Relevant Lines:	15614

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💛 - Coveralls

[Rigidity]

I think you have to do #[cfg_attr(feature = "py-bindings", pyo3::pyfunction)] instead?