feat: remove deprecated shell scripts and add Python alternatives for all of them

setup.sh

@@ -414,11 +414,11 @@ main() {
     export PATH=$PATH:$DOTFILES_PATH/bin
 
     # Create new .bashrc with exports for initial `dotf update` command
-    cat << 'EOF' >> $HOME/.bashrc
+    cat << EOF >> $HOME/.bashrc
 export NIXPKGS_ALLOW_INSECURE=1
-export DOTFILES_PATH=$DOTFILES_PATH
-export PATH=$PATH:$DOTFILES_PATH/bin
-export PATH=$PATH:$HOME/.local/bin
+export DOTFILES_PATH=${DOTFILES_PATH}
+export PATH=\$PATH:\$DOTFILES_PATH/bin
+export PATH=\$PATH:\$HOME/.local/bin
 EOF
     cp $HOME/.bashrc $HOME/.profile