Add lfk

[janosmiko]

LFK is a lightning-fast, keyboard-focused, yazi-inspired TUI for navigating and managing Kubernetes clusters.

https://github.com/janosmiko/lfk

[ajeetraina]

Cc @apurvabhandari

[apurvabhandari]

@janosmiko Can you open PR for this ?

[janosmiko]

Hi @apurvabhandari ,

I added the PR:
#417

As a side effect, my md linter polished the MD a bit, it removed the redundant spaces from the end of the lines in the readme. Please let me know if those should be kept, I'll update the PR accordingly.