Cosmos-sdk: UX: improve [gaiacli keys]

[zramsay]

• [ ] the requirement to use names (--name) should be removed. It's fine as a helper but right now it's super confusing. I should be able to do basecli keys add --new and just get an un-named key. The only output should be the address to stdout (maybe in combination with a --dev flag). The extra stuff like text and recovery phrase outputted to stdout is clutter for automated tests.
• [ ] re-introduce the --from flag for basecli keys send. This flag IIRC once existed. Sending a transaction should have a --from and a --to. Even if the --name flag is well described (it currently isn't), using --name as the "from" is wholly unintuitive.

[jaekwon]

I think basecli keys shouldn't know about tx formats. You should generate the bytes to sign, and sign it as a separate step using basecli keys.

[ValarDragon]

We should also include more information for people trying to specify the recovery key themselves. (i.e. what the wordlist is, minimum number of words, etc.)

[ValarDragon]

Is requiring --name a big problem for automation scripts? It didn't appear to me to be too bad in the CLI tests, and its something we want to enforce onto most users.

[ValarDragon]

For gaiacli send, here is what I am thinking for changing --name to --from. I think we should have some code duplication in gaia-7000, and support both --name and --from, but provide a warning whenever a user uses --name instead of --from. Update all the docs to not mention --from anymore, and make the help note that its deprecated. (The purpose of this deprecation is to make the transition less painful for people) Overall, I think transitioning like this will save a lot of problems on our end regarding communicating this breaking change, since gaia-7000 users will see the warning when using the code.

Then once gaia-7000 is merged remove the code supporting --name.

[jackzampolin]

Closing this as fix was merged with #1568