feat: Add new sidebar for Chatwoot V4 (#10291)

This PR has the initial version of the new sidebar targeted for the next major redesign of the app. This PR includes the following changes

- Components in the `layouts-next` and `base-next` directories in `dashboard/components`
- Two generic components `Avatar` and `Icon`
- `SidebarGroup` component to manage expandable sidebar groups with nested navigation items. This includes handling active states, transitions, and permissions.
- `SidebarGroupHeader` component to display the header of each navigation group with optional icons and active state indication.
- `SidebarGroupLeaf` component for individual navigation items within a group, supporting icons and active state.
- `SidebarGroupSeparator` component to visually separate nested navigation items. (They look a lot like header)
- `SidebarGroupEmptyLeaf` component to render empty state of any navigation groups.

----

Co-authored-by: Pranav <pranav@chatwoot.com>
Co-authored-by: Pranav <pranavrajs@gmail.com>

app/javascript/dashboard/components-next/icon/Icon.vue

@@ -0,0 +1,19 @@
+<script setup>
+import { h, isVNode } from 'vue';
+
+const props = defineProps({
+  icon: { type: [String, Object, Function], required: true },
+});
+
+const renderIcon = () => {
+  if (!props.icon) return null;
+  if (typeof props.icon === 'function' || isVNode(props.icon)) {
+    return props.icon;
+  }
+  return h('span', { class: props.icon });
+};
+</script>
+
+<template>
+  <component :is="renderIcon" />
+</template>

app/javascript/dashboard/components-next/icon/Logo.vue

@@ -0,0 +1,28 @@
+<template>
+  <svg
+    v-once
+    width="16"
+    height="16"
+    viewBox="0 0 16 16"
+    fill="none"
+    xmlns="http://www.w3.org/2000/svg"
+  >
+    <g clip-path="url(#woot-logo-clip-2342424e23u32098)">
+      <path
+        d="M8 16C12.4183 16 16 12.4183 16 8C16 3.58172 12.4183 0 8 0C3.58172 0 0 3.58172 0 8C0 12.4183 3.58172 16 8 16Z"
+        fill="#2781F6"
+      />
+      <path
+        d="M11.4172 11.4172H7.70831C5.66383 11.4172 4 9.75328 4 7.70828C4 5.66394 5.66383 4 7.70835 4C9.75339 4 11.4172 5.66394 11.4172 7.70828V11.4172Z"
+        fill="white"
+        stroke="white"
+        stroke-width="0.1875"
+      />
+    </g>
+    <defs>
+      <clipPath id="woot-logo-clip-2342424e23u32098">
+        <rect width="16" height="16" fill="white" />
+      </clipPath>
+    </defs>
+  </svg>
+</template>