feat: SLA threshold card component (#9163)

- Component to display SLA timer in the conversation card and header

app/javascript/dashboard/helper/directives/resize.js

@@ -0,0 +1,41 @@
+import { debounce } from '@chatwoot/utils';
+
+const RESIZE_OBSERVER_DEBOUNCE_TIME = 100;
+
+function createResizeObserver(el, binding) {
+  const { value } = binding;
+  const observer = new ResizeObserver(
+    debounce(entries => {
+      const entry = entries[0];
+      if (entry && value && typeof value === 'function') {
+        value(entry);
+      }
+    }, RESIZE_OBSERVER_DEBOUNCE_TIME)
+  );
+
+  el.cwResizeObserver = observer;
+  observer.observe(el);
+}
+
+function destroyResizeObserver(el) {
+  if (el.cwResizeObserver) {
+    el.cwResizeObserver.unobserve(el);
+    el.cwResizeObserver.disconnect();
+    delete el.cwResizeObserver;
+  }
+}
+
+export default {
+  bind(el, binding) {
+    createResizeObserver(el, binding);
+  },
+  update(el, binding) {
+    if (binding.oldValue !== binding.value) {
+      destroyResizeObserver(el);
+      createResizeObserver(el, binding);
+    }
+  },
+  unbind(el) {
+    destroyResizeObserver(el);
+  },
+};