[DP0031] Consider adding a list of principles table

[sankarshanmukhopadhyay]

Problem/Concern

See https://github.com/trustoverip/deliverables/blob/main/recommendations/DP0004-privacy-by-design/DP0004-privacy-by-design.md and consider adding a similar table

Proposed Solution

Modify DP0031 to have an at a glance table

[sankarshanmukhopadhyay]

The proposed changes are for readability purposes and not blocking the release of the work, this will be considered in an upcoming iteration.