Only delete file if it exists

[pepicrft]

Short description 📝

While using Tuist, I got this error that indicates that we are trying to delete files even if they don't exist:

We received an error that we couldn't handle:
    - Localized description: “contents.xcworkspacedata” couldn’t be removed.
    - Error: Error Domain=NSCocoaErrorDomain Code=4 "“contents.xcworkspacedata” couldn’t be removed." UserInfo={NSUserStringVariant=(
    Remove
), NSFilePath=/Users/pepibumur/src/github.com/tuist/microfeatures-example/Projects/uFeatures/uFeatures.xcodeproj/project.xcworkspace/contents.xcworkspacedata, NSUnderlyingError=0x7fb643d31b90 {Error Domain=NSPOSIXErrorDomain Code=2 "No such file or directory"}}"

To prevent that from happening, I extended the delete method from FileHandler to do a check before deleting the file. This doesn't prevent race conditions that might happen if we delete files from multiple threads, but at least should minimize the occurrences.

[codecov]

Codecov Report

Merging #1177 into master will increase coverage by 0.54%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #1177      +/-   ##
==========================================
+ Coverage   76.88%   77.42%   +0.54%     
==========================================
  Files         273      273              
  Lines        9620     9621       +1     
==========================================
+ Hits         7396     7449      +53     
+ Misses       2224     2172      -52     

Impacted Files	Coverage Δ
Sources/TuistSupport/Utils/FileHandler.swift	75.22% <100.00%> (+0.22%)	⬆️
Sources/TuistKit/Commands/InitCommand.swift	55.06% <0.00%> (+5.69%)	⬆️
Sources/TuistSupport/System/System.swift	80.71% <0.00%> (+5.71%)	⬆️
Sources/TuistKit/Commands/LintCommand.swift	75.86% <0.00%> (+6.89%)	⬆️
Sources/TuistKit/Commands/ScaffoldCommand.swift	87.61% <0.00%> (+7.07%)	⬆️
Sources/TuistSigning/SigningCipher.swift	84.70% <0.00%> (+9.41%)	⬆️
Sources/TuistSupport/Xcode/XcodeController.swift	86.95% <0.00%> (+21.73%)	⬆️
Sources/TuistCore/Graph/Nodes/SDKNode.swift	100.00% <0.00%> (+28.57%)	⬆️

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