legacy_constructor rule should trigger for UIOffsetMake

[marcelofabri]

New Issue Checklist

• Updated SwiftLint to the latest version
• I searched for existing GitHub issues

Bug Report

Environment

• SwiftLint version (run swiftlint version to be sure)? 0.26.0

• Installation method used (Homebrew, CocoaPods, building from source, etc)? CP

• Paste your configuration file: empty

• Are you using nested configurations?
  If so, paste their relative paths and respective contents.

No

• Which Xcode version are you using (check xcode-select -p)?

9.2

• Do you have a sample that shows the issue? Run echo "[string here]" | swiftlint lint --no-cache --use-stdin --enable-all-rules
  to quickly test if your example is really demonstrating the issue. If your example is more
  complex, you can use swiftlint lint --path [file here] --no-cache --enable-all-rules.

// This should trigger a violation:
let offset = UIOffsetMake(0, 8)