save project type in subscriber collection

app/Http/Controllers/Form/ResidentialController.php

@@ -282,6 +282,7 @@ class ResidentialController extends Controller
             $sdl->postcode = $coverage->postcode;
             $sdl->city = $coverage->city;
             $sdl->state = $coverage->state;
+            $sdl->project_type = $coverage->project_type;
             $sdl->front_ic = $pathIconF;
             $sdl->back_ic = $pathIconB;
             $sdl->visaF = $pathVisaF;
@@ -569,6 +570,7 @@ class ResidentialController extends Controller
                 $sdl->postcode = $coverage->postcode;
                 $sdl->city = $coverage->city;
                 $sdl->state = $coverage->state;
+                $sdl->project_type = $coverage->project_type;
                 $sdl->front_ic = $pathIconF;
                 $sdl->back_ic = $pathIconB;
                 $sdl->visaF = $pathVisaF;