Create Python AI stack entry

[michael-valdron]

Which area is this issue related to?

/kind task

/area registry

Issue Description

Create Python AI stack entry with devfile and resource files.

See proposal document for design criteria: https://docs.google.com/document/d/1oolCZRL4eAiuqTufMni6sOiTQjH7lsfwD09l_BU-G2A/edit

Acceptance Criteria

• [ ] Create stack entry with stack.yaml and initial version
• [ ] Create initial stack version devfile
• [ ] Create supporting resources files
• [ ] Create the necessary tests

[michael-valdron]

Initial parent criteria needs to be completed before this issue can be started: #1574