dev: clippy::nursery non breaking

[bhavyagosai]

Time spent on this PR: 2 hours

Related: #584

Pull Request type

Please check the type of change your PR introduces:

• Bugfix
• Feature
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no API changes)
• Build-related changes
• Documentation content changes
• Testing

What is the new behavior?

Applied clippy::nursery lints

Does this introduce a breaking change?

• Yes
• No

[Eikix]

lgtm! nice first PR (if i'm not mistaken)
welcome

[codecov]

Codecov Report

Attention: 376 lines in your changes are missing coverage. Please review.

Comparison is base (71506a8) 23.17% compared to head (4a9e1da) 79.71%.
Report is 246 commits behind head on main.

Files	Patch %	Lines
crates/core/src/client/mod.rs	77.05%	92 Missing ⚠️
crates/core/src/client/config.rs	29.88%	61 Missing ⚠️
crates/core/src/client/helpers.rs	65.04%	43 Missing ⚠️
crates/core/src/client/errors.rs	10.00%	36 Missing ⚠️
crates/core/src/contracts/kakarot.rs	60.52%	30 Missing ⚠️
crates/core/src/mock/mock_starknet.rs	82.35%	27 Missing ⚠️
crates/core/src/client/waiter.rs	65.11%	15 Missing ⚠️
crates/core/src/contracts/contract_account.rs	75.51%	12 Missing ⚠️
crates/core/src/models/call.rs	92.98%	12 Missing ⚠️
crates/core/src/models/block.rs	95.02%	11 Missing ⚠️
... and 8 more

Additional details and impacted files

@@             Coverage Diff             @@
##             main     #653       +/-   ##
===========================================
+ Coverage   23.17%   79.71%   +56.53%     
===========================================
  Files           9       44       +35     
  Lines        1247     3446     +2199     
===========================================
+ Hits          289     2747     +2458     
+ Misses        958      699      -259     

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[bhavyagosai]

lgtm! nice first PR (if i'm not mistaken) welcome

yes its my first PR!