Shorthand Optional Binding

[avbangar]

Issue number of the reported bug or feature request: #124

Describe your changes:

• shorthand optional binding functionality arrived in Swift 5.7.
• making use of this shorthand will increase the readability of the codebase.
• this PR replaces the current uses of the long form.

Example:

let foo: FooType? = ...

if let foo = foo {
    ...
}

Can now be shortened to:

let foo: FooType? = ...

if let foo {
    ...
}

This also works for guard let, if var, etc.

Testing performed:

Ran the tests provided using swift test.

[codecov]

Codecov Report

Base: 96.71% // Head: 96.71% // No change to project coverage 👍

Coverage data is based on head (6279ee0) compared to base (289872e).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #125   +/-   ##
=======================================
  Coverage   96.71%   96.71%           
=======================================
  Files          50       50           
  Lines        2773     2773           
=======================================
  Hits         2682     2682           
  Misses         91       91           

Impacted Files	Coverage Δ
Sources/XCDiffCommand/CommandRunner.swift	97.36% <100.00%> (ø)
...es/XCDiffCore/Comparator/CopyFilesComparator.swift	99.28% <100.00%> (ø)
...XCDiffCore/Comparator/DependenciesComparator.swift	97.80% <100.00%> (ø)
...ffCore/Comparator/ResolvedSettingsComparator.swift	98.75% <100.00%> (ø)
...es/XCDiffCore/Comparator/RunScriptComparator.swift	100.00% <100.00%> (ø)
...e/Library/Descriptors/SwiftPackageDescriptor.swift	89.65% <100.00%> (ø)
...es/XCDiffCore/Library/SettingValueComparator.swift	100.00% <100.00%> (ø)
Sources/XCDiffCore/Library/SettingsHelper.swift	94.33% <100.00%> (ø)
...iffCore/ResultRenderer/Renderer/HTMLRenderer.swift	100.00% <100.00%> (ø)

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

☔ View full report at Codecov.
📢 Do you have feedback about the report comment? Let us know in this issue.

[kwridan]

Thank you for contributing this @avbangar

Can we trouble you to re-submit with a signed commit?

Some more details on why this is needed can be found here:
https://github.com/bloomberg/.github/blob/master/CONTRIBUTING.md#contribution-licensing

[avbangar]

Sure thing @kwridan! I'm not really sure why but my original commit message was signed with my alternative email address 🤔

I think it's fixed now though:

[kwridan]

Awesome, thanks for the updates!