feat(vendor-sync): use specified directory instead of curl and zip files

[claimableperch]

Description

Accept string version that if it points to a directory, is used as the wordpress install source.
This works around the bug with WP_REST_Revisions_Controller you might have been seeing at circleci without ssh.

Change Log

• Accept version if points to directory, is the wordpress install source.

Types of changes (if applicable):

• 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 not work as expected).