chore: change bindings for 'fzf', 'fzf-tab'

chore: change petalinux workspace prints in zshrc

chore: add vivado & petalinux examples in zshrc

fix: edit fzf config in zshrc for older system

feat: add zsh plugins; syntax-highlighting, fzf-tab

perf: change xhost allows localhost only

docs: update README.md for readability

docs: update 'README.md'; tips and issues

design: delete unnecessary spaces in fastfetch

feat: change fetch config to fastfetch from neofetch

chore: update '.zshrc'; change theme, add xhost+

chore: add alias bfg to diet git commit amount usage

chore: update '.zshrc'; add alias, start rc

feat: edit screenshot script to save clipboard as well

feat: add new feature to lock screen