Allow attaching path

[aurelien-reeves]

Is your pull request related to a problem? Please describe.

Fixes #1506

Describe the solution you have implemented

We plan to allow attaching files by specifying their path
Cucumber will take care of opening and reading it.

[luke-hill]

Make sure to add a path to a file auto-detects (Maybe based off extension??)

You could have an outline with

foo.png
bar.txt
baz.md
bay.jpeg

e.t.c.

[aurelien-reeves]

Make sure to add a path to a file auto-detects (Maybe based off extension??)

You could have an outline with

foo.png
bar.txt
baz.md
bay.jpeg

e.t.c.

Yeah, that is interesting indeed 👍
At first I'll push a basic feature file with no auto-detection specified for a first iteration. Once it passes, we will be able to iterate on that auto-detection ideas

[aslakhellesoy]

This looks great @aurelien-reeves! Nice and simple.

Reading your code I had an idea that we might be able to add at the same time: Make the media type optional when you're passing an existing path. We could use a library to look up a media type for a file extension.