Update Adventure Content Fragment Model properties to support new dat…

[godanny86]

Description

• Changed Group Size field data type from String to Number

• Updated Adventure Type CFM to use new Enumeration type properties.

• Updated Adventure Type field in Adventure Type CFM to use new Enumeration type properties.

• Updated Difficulty field in Adventure Type CFM to use new Enumeration type properties.

• Updated Price field in Adventure Type CFM to use new validation properties.

• Updated enumerations fields to use correct metatype

Related Issue

fix for Issue #231

Motivation and Context

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

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

Checklist:

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