enable to install mainsail/fluidd without moonraker

This allows the user to install
remote mode Mainsail / Fluidd without Moonraker installed
in order to setup separated web server from klipper host.

scripts/fluidd.sh

@@ -19,7 +19,21 @@ function install_fluidd() {
   ### exit early if moonraker not found
   if [[ -z $(moonraker_systemd) ]]; then
     local error="Moonraker not installed! Please install Moonraker first!"
-    print_error "${error}" && return
+    print_error "${error}"
+    while true; do
+      read -p "${cyan}###### Install Fluidd without Moonraker? (y/N):${white} " yn
+      case "${yn}" in
+        Y|y|Yes|yes)
+          select_msg "Yes"
+          break;;
+        N|n|No|no|"")
+          select_msg "No"
+          abort_msg "Exiting Fluidd setup ...\n"
+          return;;
+        *)
+          error_msg "Invalid Input!";;
+      esac
+    done
   fi
 
   ### checking dependencies

scripts/mainsail.sh

@@ -19,7 +19,21 @@ function install_mainsail() {
   ### exit early if moonraker not found
   if [[ -z $(moonraker_systemd) ]]; then
     local error="Moonraker not installed! Please install Moonraker first!"
-    print_error "${error}" && return
+    print_error "${error}"
+    while true; do
+      read -p "${cyan}###### Install remote-mode Mainsail without Moonraker? (y/N):${white} " yn
+      case "${yn}" in
+        Y|y|Yes|yes)
+          select_msg "Yes"
+          break;;
+        N|n|No|no|"")
+          select_msg "No"
+          abort_msg "Exiting Mainsail setup ...\n"
+          return;;
+        *)
+          error_msg "Invalid Input!";;
+      esac
+    done
   fi
 
   ### checking dependencies
@@ -157,6 +171,7 @@ function download_mainsail_macros() {
 }
 
 function download_mainsail() {
+  local services
   local url
   url=$(get_mainsail_download_url)
 
@@ -179,8 +194,9 @@ function download_mainsail() {
     exit 1
   fi
 
-  ### check for moonraker multi-instance and if multi-instance was found, enable mainsails remoteMode
-  if [[ $(moonraker_systemd | wc -w) -gt 1 ]]; then
+  ### check for moonraker multi-instance and if no-instance or multi-instance was found, enable mainsails remoteMode
+  services=$(moonraker_systemd)
+  if [[ ( -z "$services" ) || ( $(echo "${services}" | wc -w) -gt 1 ) ]]; then
     enable_mainsail_remotemode
   fi
 }