TAG Documentation Update: TAG App Delivery

[riaankleinhans]

This issue supports updating the TAG README, Charter and moving documents to the TAG’s Gdrive. The work will be tracked in the TOC Tracking issue #1366.

The following points should be addressed:

• PR updating TAG repo README in accordance to the TOC template
• PR updating TAG charter in the TOC repo charter folder according to the TOC template
• Move all TAG related shared documents ( Like meeting notes and slides ) to the projects@cncf.io drive for the TAG.
  The aim of this update is to ensure no documents get lost in private or company accounts. Reach out to @riaankleinhans for assistance on that.