Add better help text for `key generate`
Add better help text for `key generate`

and add `required: true` on `ap --ssid`
tikurahul/t2-cli,tessel/t2-cli,tessel/t2-cli,LinusU/t2-cli,rwaldron/t2-cli,rwaldron/t2-cli,Student007/t2-cli,LinusU/t2-cli,nodebotanist/t2-cli,rwaldron/t2-cli,tessel/t2-cli,nodebotanist/t2-cli,tikurahul/t2-cli,tikurahul/t2-cli,nodebotanist/t2-cli