feat(#195): display current path in the strider

[knidarkness]

This pull request addresses the #195 issue and resolves the problem of @RobWalt's solution with clicks 1-row offset.

As in Rob's PR, the path displayed is a relative path from the zellij's start location.

Display the current path on top of the directory files in the strider default plugin. As of now, no configuration is available for this feature.

Examples of how it looks:

[imsnif]

Hey, what's the status here?

[davidfufu]

Want to echo @imsnif , what's the status on this? This is an important feature that makes the file tree more useful, unless there's another way to switch dir within the strider window.

[chanson02]

Looks like this PR can be closed, as it's functionality has been implemented in #3200.