Add support for Should operator BeLike*

[johlju]

Pull Request (PR) description

• Add support for Should operators:
  • BeLike
  • BeLikeExactly

This Pull Request (PR) fixes the following issues

• Fixes Support convert Should -BeLike to v6 syntax #12
• Fixes Support convert Should -BeLikeExactly to v6 syntax #13

Task list

• Added an entry to the change log under the Unreleased section of the
  file CHANGELOG.md. Entry should say what was changed and how that
  affects users (if applicable), and reference the issue being resolved
  (if applicable).
• Documentation added/updated in README.md and source/WikiSource.
• Comment-based help added/updated for all new/changed functions.
• Localization strings added/updated in all localization files as appropriate.
• Examples appropriately added/updated.
• Unit tests added/updated. See DSC Community Testing Guidelines.
• Integration tests added/updated (where applicable). See
  DSC Community Testing Guidelines.
• New/changed code adheres to DSC Community Style Guidelines.

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This change is