Feat: Re-adapt bufferline when terminal window is resized

[typhooncamel]

Requested feature

When opening many buffers, things work as expected (you can cycle through buffers, and the current buffer filename is always visible. However, if the window is resized (for instance made wider), the bufferline remains the way it was, leaving a lot of (new) blank space.

Motivation

Ideally, the bufferline would adapt as the window size is changed.