library: Adds Adw.AboutWindow entry (#305)

* Adds Adw.AboutWindow Demo
* Updated Link
* Updated Code
* Updated Icon
* Added Acknowledgement Section

src/Library/demos/About Window/main.blp

@@ -0,0 +1,25 @@
+using Gtk 4.0;
+using Adw 1;
+
+Adw.StatusPage {
+  title: "About Window";
+  description: _("A window showing information about the application.");
+
+  Box {
+    orientation: vertical;
+    halign: center;
+
+    Button button {
+      label: _("About");
+      margin-bottom: 12;
+      styles ['pill']
+    }
+
+    LinkButton {
+      label: "API Reference";
+      uri: "https://gnome.pages.gitlab.gnome.org/libadwaita/doc/1.3/class.AboutWindow.html";
+    }
+  }
+}
+
+

src/Library/demos/About Window/main.js

@@ -0,0 +1,27 @@
+import Adw from "gi://Adw";
+import Gtk from "gi://Gtk";
+
+const parent = workbench.window;
+const button = workbench.builder.get_object("button");
+
+function handleClick() {
+  const dialog = new Adw.AboutWindow({
+    transient_for: parent,
+    application_name: "Application",
+    developer_name: "Developer Name",
+    license_type: Gtk.License.GPL_3_0_ONLY,
+    version: "1.2.3",
+    website: "https://gnome.pages.gitlab.gnome.org/libadwaita/doc/1.3",
+    application_icon: "application-x-executable",
+    issue_url: "https://gitlab.gnome.org/GNOME/libadwaita/-/issues",
+    developers: ["Sriyansh Shivam https://linkfree.io/SoNiC-HeRE"],
+  });
+
+  dialog.add_acknowledgement_section(_("Support Workbench"), [
+    "GitHub https://github.com/sonnyp/Workbench",
+  ]);
+
+  dialog.present();
+}
+
+button.connect("clicked", handleClick);

src/Library/demos/About Window/main.json

@@ -0,0 +1,7 @@
+{
+  "name": "About Window",
+  "category": "user_interface",
+  "description": "A window showing information about the application.",
+  "panels": ["code", "preview"],
+  "autorun": true
+}