Add devcontainer configuration and Dependabot setup

- Created a new devcontainer.json file for an Alpine-based development environment.
- Added a Dependabot configuration file to automate dependency updates for devcontainers.

quarter-rtl/assets/js/smoothScroll.js

@@ -1,20 +1,20 @@
-const smoothScroll = () => {
-  var links = document.querySelectorAll('a[href^="#"]');
-  if (!links.length) {
-    return;
-  }
-  links.forEach(function (link) {
-    link.addEventListener("click", function (e) {
-      e.preventDefault();
-
-      var targetId = this.getAttribute("href").substring(1);
-
-      var targetElement = document.getElementById(targetId);
-      if (targetElement) {
-        targetElement.scrollIntoView({ behavior: "smooth" });
-      } else {
-        window.scroll({ top: 0, left: 0, behavior: "smooth" });
-      }
-    });
-  });
-};
+const smoothScroll = () => {
+  var links = document.querySelectorAll('a[href^="#"]');
+  if (!links.length) {
+    return;
+  }
+  links.forEach(function (link) {
+    link.addEventListener("click", function (e) {
+      e.preventDefault();
+
+      var targetId = this.getAttribute("href").substring(1);
+
+      var targetElement = document.getElementById(targetId);
+      if (targetElement) {
+        targetElement.scrollIntoView({ behavior: "smooth" });
+      } else {
+        window.scroll({ top: 0, left: 0, behavior: "smooth" });
+      }
+    });
+  });
+};