Display Progress for Cloning Submodules

[karaketir16]

Cloning submodules can be a time-consuming process. This update introduces progress indicators to provide better visibility and feedback during the submodule fetching process, improving the user experience.

[cmuellner]

Thanks, I did not know this switch, so I quickly tried it out.
So, what this does is show the download speed and the arrived bits.

E.g. before:

$ git submodule update --init 
Submodule path 'foo': checked out '35203a4f123d0be162b6b5ea213a657b594f8c36

After:

$ git submodule update --init --progress
Cloning into 'path/to/foo'...
remote: Enumerating objects: 267, done.        
remote: Counting objects: 100% (105/105), done.        
remote: Compressing objects: 100% (69/69), done.        
remote: Total 267 (delta 42), reused 62 (delta 23), pack-reused 162 (from 1)        
Receiving objects: 100% (267/267), 6.08 MiB | 5.43 MiB/s, done.
Resolving deltas: 100% (102/102), done.
Submodule path 'foo': checked out '35203a4f123d0be162b6b5ea213a657b594f8c36'

I like this change.

[cmuellner]

LGTM

[cmuellner]

Merged. Thanks!