Truncate the start of file paths in the StatusLine

[bbodi]

Fixes the same issue as in #945 but for the StatusLine.

Before:

We can see that the file name is truncated, while this is more important to the user than the path.

And in the second red rectangle, we can see that the letters "od" from the path is rendered outside of the statusline area.

After:

[pickfire]

Thank you. Tested and looks good to me. I tested but still if I split too many times it will panic (well, current master also panic).

[pickfire]

Lints needs to be fixed first before I merge this.

[archseer]

Thanks! Looks good to me 👍