This task captures work related to defining the Design Proposal process.
The process has been define by @tamasolaszi and presented to TSC by @pbeesley-arm (see email sent to TSC mailing list at 2019. April 30 with the subject "Trusted Firmware-M Documentation Proposal".
There is a change made by me (@gyuri-szing) implementing the proposal: https://review.trustedfirmware.org/#/c/trusted-firmware-m/+/1411/