chore: move git-mirror script to scripts and add scripts to path

Changed files
+1
scripts
.local/bin/git-mirror.sh scripts/git-mirror.sh
+1
.zshrc
···
# If you come from bash you might have to change your $PATH.
export PATH=$HOME/bin:$HOME/.local/bin:/usr/local/bin:$PATH
export PATH=$HOME/bin:/usr/local/bin:$PATH:/snap/bin/
+
export PATH=$HOME/scripts:$PATH
# Path to your Oh My Zsh installation.
export ZSH="$HOME/.oh-my-zsh"