Add theme: Clickable Scrollbar (#612)

Co-authored-by: tahawael <tahawael@users.noreply.github.com>

themes/1207efa9-fce4-439f-a673-9d3c0e4e8820/chrome.css

@@ -0,0 +1,14 @@
+
+scrollbox:nth-child(5) {
+      scrollbar-width: thin !important;
+}
+
+@media (-moz-bool-pref: "zen.view.sidebar-expanded") {
+      scrollbox:nth-child(5) {
+            scrollbar-width: auto !important;
+      }
+}
+
+#navigator-toolbox {
+      -moz-window-dragging: no-drag; /* Disables window dragging */
+}

themes/1207efa9-fce4-439f-a673-9d3c0e4e8820/readme.md

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+
+# clickable Scrollbar in Sidebar
+
+Makes Sidebar Scrollbar clickable

themes/1207efa9-fce4-439f-a673-9d3c0e4e8820/theme.json

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+{
+    "id": "1207efa9-fce4-439f-a673-9d3c0e4e8820",
+    "name": "Clickable Scrollbar",
+    "description": "Makes Sidebar Scrollbar clickable",
+    "homepage": "",
+    "style": "https://raw.githubusercontent.com/zen-browser/theme-store/main/themes/1207efa9-fce4-439f-a673-9d3c0e4e8820/chrome.css",
+    "readme": "https://raw.githubusercontent.com/zen-browser/theme-store/main/themes/1207efa9-fce4-439f-a673-9d3c0e4e8820/readme.md",
+    "image": "https://raw.githubusercontent.com/zen-browser/theme-store/main/themes/1207efa9-fce4-439f-a673-9d3c0e4e8820/image.png",
+    "author": "tahawael",
+    "version": "1.0.0",
+    "tags": [],
+    "createdAt": "2024-10-19",
+    "updatedAt": "2024-10-19"
+}