feat: add --dir named argument and use --install=n as flag for config only (#6)

This PR repurposes the `--install` argument as a flag to disable download and installation of the Vegvisir git submodule.

A new flag `--dir` is used to specify the install directory instead of `--install`.

Reviewed-on: https://codeberg.org/vegvisir/install/pulls/6

install.sh

@@ -2,6 +2,7 @@
 
 # Initialize variables
 cwd=""
+dir=""
 install=""
 example=""
 overwrite=""
@@ -156,8 +157,12 @@ main() {
 	# Get the current working directory
 	cwd=$(pwd)
 
+	# Download and install the Vegvisir repository
+	if [[ "$install" != "n" ]]; then
 		check_sys_depend
 		install_vegvisir
+	fi
+
 	configure_vegvisir
 
 	echo "Vegvisir has been sucessfully installed."
@@ -178,6 +183,10 @@ main() {
 # Loop through all arguments
 for arg in "$@"; do
 	case $arg in
+		--dir=*)
+			dir="${arg#*=}"
+		;;
+
 		--install=*)
 			install="${arg#*=}"
 		;;
@@ -197,14 +206,14 @@ for arg in "$@"; do
 done
 
 # Start execution immediately if an install directory was passed
-if [ -n "$install" ]; then
-	if ! [ -d "$install" ]; then
-		echo_err "Installation aborted: '$install' is not a directory"
+if [ -n "$dir" ]; then
+	if ! [ -d "$dir" ]; then
+		echo_err "Installation aborted: '$dir' is not a directory"
 		exit 1
 	fi
 
 	# Move to install directory and run main
-	cd $install
+	cd $dir
 	main
 fi