The new flag fetch and display the request ressource and then continue
watching the ressource until timeout or cancellation.
A single ressource/ressource type is supported.
Signed-off-by: Soule BA <soule@weave.works>
This fixes a bug where the wrong type was displayed for various
`get source` commands.
```console
$ flux get sources helm --namespace default
✗ no Bucket objects found in default namespace
```
Signed-off-by: Hidde Beydals <hello@hidde.co>
