expose integers as our fixed-width integer types from chia-blockchain

[arvidn]

This is an alternative approach to #378
It uses a trait to recursively convert the rust types into python, which is better in my mind.

It's a lot simpler and robust to use a trait for this. The downside is that rust doesn't support trait specializations or negative trait bounds, so it's not possible to defer all non-covered types to a default implementation.

There does not seem to be a slow-down.

main

232.64s call     tests/test_block_record_fidelity.py::test_block_record
8.56s call     tests/test_program_fidelity.py::test_uncurry
7.17s call     tests/test_blspy_fidelity.py::test_bls
1.16s call     tests/test_program_fidelity.py::test_round_trip
0.91s call     tests/test_program_fidelity.py::test_run_program
0.42s call     tests/test_program_fidelity.py::test_tree_hash
0.20s call     tests/test_blspy_fidelity.py::test_invalid_points
0.08s call     tests/test_run_block_generator.py::test_run_block_generator_cost
0.02s call     tests/test_run_puzzle.py::test_block_834752[generator-tests/block-834752.txt-0]
0.02s call     tests/test_run_puzzle.py::test_block_834752[generator-tests/block-834752.txt-33554432]

this PR

211.67s call     tests/test_block_record_fidelity.py::test_block_record
8.60s call     tests/test_program_fidelity.py::test_uncurry
7.20s call     tests/test_blspy_fidelity.py::test_bls
1.19s call     tests/test_program_fidelity.py::test_round_trip
0.94s call     tests/test_program_fidelity.py::test_run_program
0.47s call     tests/test_program_fidelity.py::test_tree_hash
0.20s call     tests/test_blspy_fidelity.py::test_invalid_points
0.08s call     tests/test_run_block_generator.py::test_run_block_generator_cost
0.02s call     tests/test_run_puzzle.py::test_block_834752[generator-tests/block-834752-compressed.txt-33554432]
0.02s call     tests/test_run_puzzle.py::test_block_834752[generator-tests/block-834752.txt-33554432]

[coveralls-official]

Pull Request Test Coverage Report for Build 7726793994

• -57 of 147 (61.22%) changed or added relevant lines in 9 files are covered.
• 8 unchanged lines in 4 files lost coverage.
• Overall coverage decreased (-0.2%) to 84.508%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
chia-protocol/src/block_record.rs	31	32	96.88%
chia-protocol/src/unfinished_block.rs	0	2	0.0%
chia-protocol/src/bytes.rs	3	6	50.0%
chia_py_streamable_macro/src/lib.rs	34	37	91.89%
chia-protocol/src/chia_protocol.rs	0	6	0.0%
chia-protocol/src/fullblock.rs	0	6	0.0%
chia-protocol/src/header_block.rs	0	6	0.0%
chia-traits/src/int.rs	21	51	41.18%

Files with Coverage Reduction	New Missed Lines	%
chia-protocol/src/block_record.rs	1	77.37%
chia-protocol/src/unfinished_block.rs	1	32.43%
chia-protocol/src/fullblock.rs	3	16.67%
chia-protocol/src/header_block.rs	3	27.16%

Totals
Change from base Build 7655434740:	-0.2%
Covered Lines:	11172
Relevant Lines:	13220

---

💛 - Coveralls

[Rigidity]

looks good