Enable Dapr to stop multiple apps

[chinzhiweiblank]

Description

I added the functionality of stopping multiple apps using dapr stop.

dapr stop pythonapp nodeapp blahblah

✅  app stopped successfully: pythonapp

✅  app stopped successfully: nodeapp

❌  failed to stop app id : couldn't find app id blahblah

This also works.

dapr stop pythonapp --app-id blahblah

✅  app stopped successfully: pythonapp

❌  failed to stop app id : couldn't find app id blahblah

Issue reference

We strive to have all PR being opened based on an issue, where the problem or feature have been discussed prior to implementation.

Please reference the issue this PR will close: #247

Checklist

Please make sure you've completed the relevant tasks for this PR, out of the following list:

I may need some advice on what tests and documentation to write for this functionality.

• Code compiles correctly
• Created/updated tests
• Extended the documentation

[LMWF]

Thanks for your contribution!