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/sidebar/ChannelLeaf.vue

@@ -0,0 +1,71 @@
+<script setup>
+import { computed } from 'vue';
+import Icon from 'next/icon/Icon.vue';
+
+const props = defineProps({
+  label: {
+    type: String,
+    required: true,
+  },
+  active: {
+    type: Boolean,
+    default: false,
+  },
+  inbox: {
+    type: Object,
+    required: true,
+  },
+});
+
+const channelTypeIconMap = {
+  'Channel::Api': 'i-ri-cloudy-fill',
+  'Channel::Email': 'i-ri-mail-fill',
+  'Channel::FacebookPage': 'i-ri-messenger-fill',
+  'Channel::Line': 'i-ri-line-fill',
+  'Channel::Sms': 'i-ri-chat-1-fill',
+  'Channel::Telegram': 'i-ri-telegram-fill',
+  'Channel::TwilioSms': 'i-ri-chat-1-fill',
+  'Channel::TwitterProfile': 'i-ri-twitter-x-fill',
+  'Channel::WebWidget': 'i-ri-global-fill',
+  'Channel::Whatsapp': 'i-ri-whatsapp-fill',
+};
+
+const providerIconMap = {
+  microsoft: 'i-ri-microsoft-fill',
+  google: 'i-ri-google-fill',
+};
+
+const channelIcon = computed(() => {
+  const type = props.inbox.channel_type;
+  let icon = channelTypeIconMap[type];
+
+  if (type === 'Channel::Email' && props.inbox.provider) {
+    if (Object.keys(providerIconMap).includes(props.inbox.provider)) {
+      icon = providerIconMap[props.inbox.provider];
+    }
+  }
+
+  return icon ?? 'i-ri-global-fill';
+});
+
+const reauthorizationRequired = computed(() => {
+  return props.inbox.reauthorization_required;
+});
+</script>
+
+<template>
+  <span
+    class="size-4 grid place-content-center rounded-full bg-n-alpha-2"
+    :class="{ 'bg-n-blue/20': active }"
+  >
+    <Icon :icon="channelIcon" class="size-3" />
+  </span>
+  <div class="flex-1 truncate min-w-0">{{ label }}</div>
+  <div
+    v-if="reauthorizationRequired"
+    v-tooltip.top-end="$t('SIDEBAR.REAUTHORIZE')"
+    class="grid place-content-center size-5 bg-n-ruby-5/60 rounded-full"
+  >
+    <Icon icon="i-woot-alert" class="size-3 text-n-ruby-9" />
+  </div>
+</template>