Added mouse wheel change functionality.

[ioswald]

Added ctrl+small change input = large change
Added select all after enter
Added mouse wheel changes
Added string formatting on StringFormat binding for Value (e.g. Value="{Binding ViewModel.Value, StringFormat='{}{0:F2} Hz.'}")

Pull request type

Please check the type of change your PR introduces:

• Update
• Bugfix
• Feature
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Documentation content changes

What is the current behavior?

• Mouse wheel does nothing.
• Value string format binding not applied
• Enter key moves caret to end

Issue Number: N/A

What is the new behavior?

• Mouse wheel will change the value.
• ctrl+up/down will apply large change
• Binding the string format on the value will apply once focus is released
• Enter will select all so a new value can be typed

Other information