Repository house-keeping following initial release and meeting series update

[eric-murray]

What type of PR is this?

• subproject management

What this PR does / why we need it:

• Update project meeting information with LF Zoom meeting series
• Change main branch OAS version to wip
• Add Test_definitions folder in preparation for test definitions
• Update project README

Which issue(s) this PR fixes:

N/A

Special notes for reviewers:

None

Changelog input

 release-note
 - Update project meeting information with LF Zoom meeting series
 - Change main branch OAS version to `wip`
 - Add `Test_definitions` folder in preparation for test definitions
 - Update project README

Additional documentation

None