feat: support twilight flag

Author: sannidhyaroy

install.sh

@@ -28,6 +28,7 @@ echo
 
 case $choice in
   1)
+    parseTwilight "$@"
     install
     ;;
   2)
@@ -125,6 +126,13 @@ install() {
   exit 0
 }
 
+parseTwilight() {
+  if [ "$1" == "--twilight" ]; then
+    official_package_location="https://github.com/zen-browser/desktop/releases/download/twilight/zen.linux-x86_64.tar.xz"
+    echo "You're currently in Twilight mode, this means you're downloading the latest experimental features and updates."
+  fi
+}
+
 remove() {
   if [ -f "$app_bin_in_local_bin" ]; then
     echo "Old bin file detected, removing..."