utils: add usage summary generator
utils: add usage summary generator

Credit: da39a3ee5e6b4b0d3255bfef95601890afd80709@watilde
Reviewed-By: da39a3ee5e6b4b0d3255bfef95601890afd80709@iarna
PR-URL: https://github.com/npm/npm/pull/12485

misterbyrne/npm,TimeToogo/npm,Volune/npm,Volune/npm,misterbyrne/npm,DaveEmmerson/npm,DaveEmmerson/npm,evocateur/npm,TimeToogo/npm,evocateur/npm,lxe/npm,TimeToogo/npm,lxe/npm,chadnickbok/npm,misterbyrne/npm,evocateur/npm,DaveEmmerson/npm,lxe/npm,chadnickbok/npm,chadnickbok/npm,Volune/npm