allow deleting entire MODO

[cmdoret]

The modo remove command deletes an element inside an existing MODO. We don't have a way in the CLI or API to delete the actuel MODO [folder]. This is important because deleting the folder is not straightforward when using a remote object on S3.

Objective: CLI/API deletion functionality

Requirements:

• [ ] Add --force flag to allow deleting root object with modo remove Example:

  
  $ modos show --zarr data/ex
  /ex
  ├── assay
  │   └── assay1
  ├── data
  │   ├── calls1
  │   └── demo1
  ├── reference
  │   └── reference1
  └── sample
   └── sample1

$ modos remove data/ex ex Error: cannot delete root object. If you want to delete the entire MODO, use --force.

$ modos remove --force data/ex ex