Commands to manage ElasticBeanstalk service

[taraspos]

Just found one more pretty important missing feature of awless - ElasticBeanstalk operations:

• app - create/delete
• appversion - create/get/delete/deploy
• config - create/get/delete/deploy
• env - create/update/restart/terminate/restore/logs/events/configs/etc

This is just a rough list from my memory, feel free to add more items here.

Not critical, but would be nice to have it someday. Something like awsebcli and eb_deployer integrated into the awless.

[fxaguessy]

Thanks for the suggestion (of service and command names). We will try to add new services regularly, but in the mean time, feel free to add commands if you need them and submit a PR.