* add md extension to dd process doc
* rm old format of dd process doc
* wip design doc
* add diagram, add implementation
* adjust format
* fix format
* add updates per CR and arch review meeting
* update diagram sizes
* make image smaller
* try using svg instead of png
* replace png with svg, mv to docs/images dir
* updates per CR comments
* more CR comment changes
* update sa design img
* grammar fixes
* a few more updates
* fixings nits
* fix spelling err
* fix spelling, change binary to process, rm process doc
* add changes to design imagees per CR comments
