Add a list subcommand for printing the contents of a compressed file or archive

[vrmiguel]

No description provided.

[VuiMuich]

Hi first of all congrats, I really like this project!

IMO this one could be higher priority, as it would be very helpful in daily use.
I like to check archives bevor decompressing, whether they have subfolders or all the files in archive-root and depending on that set an output-path or not.

As a secondary enhancement -t | --tree and -d | --depth flags for the list subcommand might be nice additions.

[marcospb19]

@VuiMuich originally we planned on having --tree enable by default, however, that's not friendly for piping into another program or using as arguments in scripts.

So maybe we should have a way to output it without the extra tree formatting, what do you think? Do you have any flag suggestions?

[VuiMuich]

Oh, this totaly makes sense, piping a visually appealing tree is of little to no use 😄

In the spirit of #48 I was thinking of something like this:

$ ouch list example.zip
example.zip/File1
example.zip/Folder1
example.zip/Foler1/AnotherFile1
example.zip/Folder2
example.zip/Folder2/SubFolder1
example.zip/Folder2/Subfolder1/ThisFileIsDeep

$ ouch list --tree example.zip
example.zip
   ├   File1
   ├  Folder1
   |   └   AnotherFile1
   └   Folder2
       └   Subfolder1
           └   ThisFileIsDeep

$ ouch list --depth 1 example.zip
example.zip
./File1
./Folder1
./Foler1/AnotherFile1
./Folder2
./Folder2/SubFolder1

$ ouch list -t -d 1 example.zip
example.zip
   ├   File1
   ├   Folder1
   |   └   AnotherFile1
   └   Folder2
       └   Subfolder1

ouch list --files-only example.zip
$ ouch list example.zip
example.zip/File1
example.zip/Foler1/AnotherFile1
example.zip/Folder2/Subfolder1/ThisFileIsDeep

While writing this the idea of last example came to mind to have flags for --files-only and --dirs-only

[marcospb19]

Implemented in #129.