Use type syntax introduced in blueprint 0.8.0 (#77)

Co-authored-by: Hari Rana <theevilskeleton@riseup.net>

data/ui/downgrade.blp

@@ -1,7 +1,7 @@
 using Gtk 4.0;
 using Adw 1;
 
-template DowngradeWindow: Adw.Window {
+template $DowngradeWindow: Adw.Window {
   default-width: 500;
   default-height: 450;
   modal: true;

data/ui/filter.blp

@@ -1,7 +1,7 @@
 using Gtk 4.0;
 using Adw 1;
 
-template FilterWindow: Adw.Window {
+template $FilterWindow: Adw.Window {
   default-width: 500;
   default-height: 450;
   title: _("Set Filters");

data/ui/popular_remotes.blp

@@ -0,0 +1,59 @@
+using Gtk 4.0;
+using Adw 1;
+
+template $PopularRemotesWindow: Adw.Window {
+  default-width: 450;
+  default-height: 530;
+  title: "";
+
+  Adw.ToolbarView main_toolbar_view {
+    [top]
+    HeaderBar header_bar {}
+
+    content: Adw.ToastOverlay toast_overlay {
+      vexpand: true;
+
+      Adw.StatusPage {
+        valign: start;
+        title: _("Add Remote");
+        description: _("Choose from a list of popular remotes or add a new one.");
+
+        Adw.Clamp {
+          Box {
+            orientation: vertical;
+
+            ListBox list_of_remotes {
+              hexpand: true;
+              valign: start;
+              selection-mode: none;
+
+              styles [
+                "boxed-list"
+              ]
+            }
+
+            ListBox custom_list {
+              hexpand: true;
+              valign: start;
+              selection-mode: none;
+
+              styles [
+                "boxed-list"
+              ]
+
+              Adw.ActionRow add_from_file {
+                title: _("Add a Repo File");
+                activatable: true;
+              }
+
+              Adw.ActionRow custom_remote {
+                title: _("Add a Custom Remote");
+                activatable: true;
+              }
+            }
+          }
+        }
+      }
+    };
+  }
+}

data/ui/properties.blp

@@ -1,7 +1,7 @@
 using Gtk 4.0;
 using Adw 1;
 
-template PropertiesWindow: Adw.Window {
+template $PropertiesWindow: Adw.Window {
   default-width: 350;
   default-height: 600;
   modal: true;

data/ui/remotes.blp

@@ -1,8 +1,7 @@
 using Gtk 4.0;
 using Adw 1;
 
-template RemotesWindow: Adw.Window {
-  title: _("Manage Remotes");
+template $RemotesWindow: Adw.Window {
   default-width: 500;
   default-height: 450;
 

data/ui/snapshots.blp

@@ -1,7 +1,7 @@
 using Gtk 4.0;
 using Adw 1;
 
-template SnapshotsWindow: Adw.Window {
+template $SnapshotsWindow: Adw.Window {
   default-width: 500;
   default-height: 455;
   modal: true;