feat: func config volumes - interactive prompt

[zroubalik]

Signed-off-by: Zbynek Roubalik zroubali@redhat.com

Interactive prompt for managing function configuration - this PR adds Volumes (Envs will be in a separate PR).

func config - starts interactive prompt, wizard that let's you select resource and the requested operation

func config volumes - list configured Volumes

func config volumes add - starts interactive prompt, wizard that let's you add Volume mount to the configuration. It does a lookup for existing Secrets and ConfigMaps in the cluster and namespace.

func config volumes remove - starts interactive prompt, wizard that let's you remove Volume mount from the configuration.

Relates: #362

[zroubalik]

func_config_volumes.mp4

[lkingland]

Nice. Looking forward to using this flow elsewhere. Like Lance said, this is a strong example of how func doesn't fit entirely into a plugin box.

[lance]

I like it!

[lance]

Nice. Looking forward to using this flow elsewhere. Like Lance said, this is a strong example of how func doesn't fit entirely into a plugin box.

Yes! I would like to update #373 to use this flow for labels.