Start a local server without switching default version

[sdairs]

right now you do use stable then create a server. if you want to start a second version on latest you end up doing use latest.

you should be able to create a new server and pass a version as a flag that installs the version if needed and creates the server using it, without affecting the currently selected default version. flag support same specs as install and use.

so local server start --name dev-latest --version latest

to test

local use 26.3
local use which 
> default: 26.3
local server start --name dev-latest --version 26.4
> server created as 26.4
local use which
> default: 26.3