docs(adr): add ADR 0066 for interactive admin install guide#3020

ifireball wants to merge 3 commits into

fullsend-ai:mainfullsend-ai/fullsend:mainfrom

ifireball:docs/adr-0066-interactive-admin-installifireball/fullsend:docs/adr-0066-interactive-admin-installCopy head branch name to clipboard