add all member functions to Program

[arvidn]

matching chia.types.blockchain_format.SerializedProgram.

The main challenge in this PR is to mimic the Program.to() of the python version. This converts arbitrary python objects into a CLVM structure, to be passed as arguments to programs. The rust implementation of this is clvm_convert().
The python implementation can be found here:
https://github.com/Chia-Network/clvm/blob/main/clvm/SExp.py#L59-L115
and here:
https://github.com/Chia-Network/clvm/blob/main/clvm/SExp.py#L38-L55

There are tests for all types supported in this conversion on the rust side, as well as some testing to make sure the rust implementation behaves the same as the python one (test_program_fidelity.py)

[coveralls-official]

Pull Request Test Coverage Report for Build 7020997868

• 125 of 186 (67.2%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.2%) to 85.601%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
clvm-traits/src/error.rs	0	6	0.0%
chia-protocol/src/program.rs	125	180	69.44%

Totals
Change from base Build 7020975872:	-0.2%
Covered Lines:	10213
Relevant Lines:	11931

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💛 - Coveralls