On-board workflow for new contributor

[hungran]

as Admin we should have Onboard workflow for new contributors

[qmauvnt]

Subtasks:

• [ ] pitching slide desk for VNTechies
• [ ] design template for content posts on various platform
  • [ ] slide desk
  • [ ] video
  • [ ] blog post, thumbnail
  • [ ] story, short
• [ ] content publishing process
  • [ ] video
  • [ ] blog post