Add manual option to allow using an existing Windows installation

Signed-off-by: Felix Bartels <felix@9wd.eu>

README.md

@@ -348,6 +348,7 @@ RDP_IP=""
 # - 'docker'
 # - 'podman'
 # - 'libvirt'
+# - 'manual'
 WAFLAVOR="docker"
 
 # [DISPLAY SCALING FACTOR]

installer.sh

@@ -1493,6 +1493,9 @@ function waInstall() {
 
         # Check if the Windows VM is powered on.
         waCheckVMRunning
+    elif [ "$WAFLAVOR" = "manual" ]; then
+        # TODO do some checks for an existing windows vm
+        echo "Using existing vm"
     else
         # Display the error type.
         echo -e "${ERROR_TEXT}ERROR:${CLEAR_TEXT} ${BOLD_TEXT}INVALID WINAPPS BACKEND.${CLEAR_TEXT}"