Implemented numeric mask input

[CastagnaIT]

Check if this PR fulfills these requirements:

• My changes respect the Kodi add-on development rules
• I have read the CONTRIBUTING document.
• I made sure there wasn't another one Pull Requests opened for the same update/change
• I have successfully tested my changes locally

Types of changes

• New feature (non-breaking change which adds functionality)
• Feature change (non-breaking change which change behaviour of an existing functionality)
• Improvement (non-breaking change which improve functionality)
• Bug fix (non-breaking change which fixes an issue)
• Breaking change (fix or feature that would cause existing functionality to change)

Description

Kodi 19 now support numeric mask input
so we can use it for the PIN input

It depend from xbmc/xbmc#17661

In case of Feature change / Breaking change:

Describe the current behavior

Describe the new behavior

Screenshots (if appropriate):