Add #![deny(clippy::all)] to all lib.rs

[jpschorr]

• Add #![deny(clippy::all)] to all lib.rs
• Apply automatic fixes from cargo clippy --fix --all-features; cargo fmt
• Manually clean-up the ~3 clippy recommendations that automatics fixes didn't fix.

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By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[github-actions]

Conformance comparison report

	Base (6d31b39)	46026fe	+/-
% Passing	90.35%	90.35%	0.00%
✅ Passing	5731	5731	0
❌ Failing	612	612	0
🔶 Ignored	0	0	0
Total Tests	6343	6343	0

Number passing in both: 5731

Number failing in both: 612

Number passing in Base (6d31b39) but now fail: 0

Number failing in Base (6d31b39) but now pass: 0

[codecov]

Codecov Report

Attention: Patch coverage is 75.39683% with 93 lines in your changes are missing coverage. Please review.

Project coverage is 79.25%. Comparing base (6d31b39) to head (0e6b0fc).

Files	Patch %	Lines
partiql-parser/src/preprocessor.rs	28.75%	0 Missing and 57 partials ⚠️
partiql-logical-planner/src/lower.rs	60.00%	8 Missing ⚠️
extension/partiql-extension-ion/src/encode.rs	76.00%	0 Missing and 6 partials ⚠️
partiql-parser/src/parse/mod.rs	96.12%	5 Missing ⚠️
partiql-catalog/src/lib.rs	0.00%	1 Missing and 3 partials ⚠️
partiql-logical-planner/src/typer.rs	71.42%	4 Missing ⚠️
partiql-ast-passes/src/partiql_typer.rs	25.00%	3 Missing ⚠️
partiql-value/src/datetime.rs	0.00%	2 Missing ⚠️
partiql-ast-passes/src/name_resolver.rs	85.71%	1 Missing ⚠️
partiql-eval/src/eval/evaluable.rs	87.50%	1 Missing ⚠️
... and 2 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #453      +/-   ##
==========================================
- Coverage   79.26%   79.25%   -0.02%     
==========================================
  Files          66       66              
  Lines       17752    17765      +13     
  Branches    17752    17765      +13     
==========================================
+ Hits        14072    14080       +8     
- Misses       3110     3111       +1     
- Partials      570      574       +4     

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[alancai98]

Should we consider functions that now have the #[must_use] annotation as a breaking change?