Allow to do numbers filtering with has_application and application_id filters

[erickskrauch]

Description

Those two filters are listed here, but not available in this library. My PR fixes that.

Motivation and Context

My company need that.

How Has This Been Tested?

I have tested it by searching purchased phone numbers with those filters.

Types of changes

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

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[SecondeJK]

Great enhancement for some missing functionality, thank you!