accounting for directories in file path

[rachancheet]

Currently Wayshot save screenshots in the current working directory. However this is not ideal as some users like to save screenshots in a particular directory(For example $HOME/Pictures/screenshots).
This PR introduces a --folder flag which allows users to select save directory for their screenshots.

[Shinyzenith]

I believe this can be done with -f, --file.

[rachancheet]

User will have to manually set a unique file name every time they want to save a screenshot in a particular directory . Folder flag makes it so user can just specify the folder location and file names are UNIX_TIMESTAMP-wayshot.EXTENSION

[Shinyzenith]

I think this is better solved by having file flag accept paths too. That way we can automatically have the same behavior. Introducing too many flags isn't great UX.

[rachancheet]

I have added the requested change. Please review.

[Shinyzenith]

CC: @zubairmh @Decodetalkers

[zubairmh]

Aside from some styling changes that can be made, commit is ok

[Shinyzenith]

Aside from some styling changes that can be made, commit is ok

Can you expand on this? Style looks fine to me.

[zubairmh]

Can you expand on this? Style looks fine to me.

@Shinyzenith
This section could be rephrased

        if pathbuf.is_dir() {
            pathbuf.push(utils::get_default_file_name(requested_encoding));
            Some(pathbuf)
        } else {
            Some(pathbuf)
        }

to something like

        if pathbuf.is_dir() {
            pathbuf.push(utils::get_default_file_name(requested_encoding));
        }
        Some(pathbuf)

might just be feeling picky, either way works

[rachancheet]

cc @zubairmh Please review.

[zubairmh]

looks good. lgtm

[Shinyzenith]

Hi, CI is failing on this PR. Kindly format your patch.

[rachancheet]

cc @Shinyzenith fixed.

[Shinyzenith]

Hi, I'd like to merge this, can you resolve the conflicts?

[rachancheet]

Done. @Shinyzenith

[Shinyzenith]

Thanks! However, I redid the entire documentation block to be more concise and easy to read.