File support for graphql handler (alpha version) - CEXT-6144

[romario-0]

File support for graphql handler

Description

• support files from local and files array for graphql handler, handled by "source" param

Related Issue

CEXT-6144
CEXT-3417

Motivation and Context

How Has This Been Tested?

Changes deployed in dev4 and tested in local using dev4 configuration

Screenshots (if appropriate):

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:

• I have signed the Adobe Open Source CLA.
• 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.