Add GZip compression handling to the Base64 Encode/Decode Tool

[AHollowedHunter]

Pull request type

Please check the type of change your PR introduces:

• Feature

What is the current behavior?

Currently you cannot decode a GZip compressed Base64 string, or encode a string with compression applied.

Issue Number: closes #217

What is the new behavior?

• Added a toggle option to enable/disable GZip compression handling

Other information

Quality check

Before creating this PR, have you:

• Followed the code style guideline as described in CONTRIBUTING.md
• Verified that the change work in Release build configuration
• Checked all unit tests pass

[btiteux]

Hello,
Thank you for the pull request, since you are two with the same pull request and after discussion with @veler we are going to continue with the other pull request (#214) allowing us to extend in the future this feature.
Thank you for your work.