feat(env): Add describe and remove cmds

[raulb]

Description of change

Fixes #183 and #181

Depends on https://github.com/meroxa/meroxa-go/pull/64

Type of change

• New feature
• Bug fix
• Refactor
• Documentation

How was this tested?

• Unit Tests
• Tested in staging

Demo

Before this pull-request

• Commands didn't exist

After this pull-request

❯ .m env describe environment-203946
       UUID:                                
       Name:   environment-203946            
   Provider:   aws                           
     Region:   us-east-1                     
       Type:   dedicated                     
     Status:   provisioning                  
 Created At:   2021-10-16 08:08:25 +0000 UTC 
 Updated At:   2021-10-16 08:08:25 +0000 UTC 

❯ .m env rm environment-203946
To proceed, type "environment-203946" or re-run this command with --force
▸ environment-203946
Environment "environment-203946" is being removed...
Run `meroxa env describe environment-203946` for status.

❯ .m env describe environment-203946
       UUID:                                 
       Name:   environment-203946            
   Provider:   aws                           
     Region:   us-east-1                     
       Type:   dedicated                     
     Status:   deprovisioning                
 Created At:   2021-10-16 08:08:25 +0000 UTC 
 Updated At:   2021-10-18 12:21:52 +0000 UTC