Apply the font set in settings to certain output text boxes

[bladedeyna]

Allows the selected font in the settings to be applied to areas that makes sense, for example selecting a fixed width font would make the output content easier to read.

The following tools have this applied:

• The UUID Generator output
• The Hash Generator hash outputs
• Regex tester - regex string textbox

Pull request type

Please check the type of change your PR introduces:

• Bugfix
• Feature
• UI change (please include screenshot!)
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Documentation content changes
• Internationalization and localization
• Other (please describe):

What is the current behavior?

Currently the output textbox uses the default Windows font (Segoe UI) which not a fixed width font. It is not currently possible to change this font during application use.

Issue Numbers: #153 & #290

What is the new behavior?

• CustomTextBox now takes note of the Font setting via the SettingsProvider. This allows various controls to inherit and bind to this setting.

Other information

Screenshot showing the default font Segoe UI which cannot be changed by the settings

Screenshot showing the applied font (Cascadia Mono)

Screenshot showing that the font could also be changed to another fixed width font (Consolas in this case)

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

[veler]

Thank you very much for this contribution! :)