Add keybindings for fzf to run keybindings like CTRL-T, CTRL-R, and
ALT-C in zsh.
From https://github.com/junegunn/fzf:
> warning Key bindings (CTRL-T / CTRL-R / ALT-C) and fuzzy
auto-completion may not be enabled by default.
> Refer to the package documentation for more information. (e.g.
apt-cache show fzf)
Running `apt-cache show fzf` said:
> Refer /usr/share/doc/fzf/README.Debian for quick instructions on how
to add keybindings for Bash, Zsh, Fish to call fzf.
This in turn said to add this line to `~/.zshrc`, or in my case, a new
`fzf.zsh` file:
source /usr/share/doc/fzf/examples/key-bindings.zsh
This isn't needed now that the tmux-sessioniser is working, and it also
means that there isn't a weird "System32" session automatically created
within WSL2, or with my username in Pop!_OS.