Add new command /list-tracked-recipients

[asheliahut]

This new command should be called as a command of /list-tracked-recipients

The command should return a list of all the tracked recipients in a slack block layout TBD, but should show in a table view of
| Name | Short Name | ID |
| Coforma LLC | coforma | 42417878-8169-6d32-c411-21f88461b9ba-C |

This way people can then do actions on these.
This can lead into a new feature in the future with a more options drop down to do actions on the listed recipients in the future or could be a cool feature to add with this if wanted.

Make sure to also add t he new command into the manifest as well Slack Manifest