refacto: state traits take all their args by value

[tdelabro]

Following discussions with @giladchase about #1232 I split part of the changes into this PR that presents no functional changes and will therefore be easier to review and merge.

1. the traits' methods signatures were weird. Most args were passed by value but some were by reference. All of those imp Copy, so let's pass them all by value

2. for some reason, the set_storage_at method was declared infallible. Which we can't know for sure.

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This change is 

[codecov-commenter]

Codecov Report

Attention: 18 lines in your changes are missing coverage. Please review.

Comparison is base (77568a2) 70.99% compared to head (eae958a) 70.94%.

Files	Patch %	Lines
...ve_blockifier/src/state_readers/py_state_reader.rs	0.00%	3 Missing ⚠️
crates/blockifier/src/state/cached_state.rs	86.66%	2 Missing ⚠️
crates/blockifier/src/state/state_api.rs	50.00%	0 Missing and 2 partials ⚠️
crates/blockifier/src/transaction/transactions.rs	33.33%	0 Missing and 2 partials ⚠️
...tive_blockifier/src/state_readers/papyrus_state.rs	60.00%	2 Missing ⚠️
...ates/native_blockifier/src/transaction_executor.rs	0.00%	2 Missing ⚠️
crates/blockifier/src/block_execution.rs	50.00%	0 Missing and 1 partial ⚠️
...rc/execution/deprecated_syscalls/hint_processor.rs	0.00%	0 Missing and 1 partial ⚠️
crates/blockifier/src/execution/entry_point.rs	66.66%	0 Missing and 1 partial ⚠️
...lockifier/src/execution/syscalls/hint_processor.rs	0.00%	0 Missing and 1 partial ⚠️
... and 1 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1264      +/-   ##
==========================================
- Coverage   70.99%   70.94%   -0.05%     
==========================================
  Files          57       57              
  Lines        7157     7142      -15     
  Branches     7157     7142      -15     
==========================================
- Hits         5081     5067      -14     
+ Misses       1663     1660       -3     
- Partials      413      415       +2     

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[giladchase]

Thanks!

Reviewed 31 of 31 files at r1, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @tdelabro)