feat: Eslint rules (#9839)

# Pull Request Template

## Description

This PR adds new eslint rules to the code base.

**Error rules**

|    Rule name     | Type | Files updated |
| ----------------- | --- | - |
| `vue/block-order`  | error  |  ✅  |
| `vue/component-name-in-template-casing`  | error  |  ✅  |
| `vue/component-options-name-casing`  | error  |  ✅  |
| `vue/custom-event-name-casing`  | error  |  ✅  |
| `vue/define-emits-declaration`  | error  |  ✅  |
| `vue/no-unused-properties`  | error  |  ✅  |
| `vue/define-macros-order`  | error  |  ✅  |
| `vue/define-props-declaration`  | error  |  ✅  |
| `vue/match-component-import-name`  | error  |  ✅  |
| `vue/next-tick-style`  | error  |  ✅  |
| `vue/no-bare-strings-in-template`  | error  |  ✅  |
| `vue/no-empty-component-block`  | error  |  ✅  |
| `vue/no-multiple-objects-in-class`  | error  |  ✅  |
| `vue/no-required-prop-with-default`  | error  |  ✅  |
| `vue/no-static-inline-styles`  | error  |  ✅  |
| `vue/no-template-target-blank`  | error  |  ✅  |
| `vue/no-this-in-before-route-enter`  | error  |  ✅  |
| `vue/no-undef-components`  | error  |  ✅  |
| `vue/no-unused-emit-declarations`  | error  |  ✅  |
| `vue/no-unused-refs`  | error  |  ✅  |
| `vue/no-use-v-else-with-v-for`  | error  |  ✅  |
| `vue/no-useless-v-bind`  | error  |  ✅  |
| `vue/no-v-text`  | error  |  ✅  |
| `vue/padding-line-between-blocks`  | error  |  ✅  |
| ~`vue/prefer-prop-type-boolean-first`~ | ~error~ | ❌ (removed this
rule, cause a bug in displaying custom attributes) |
| `vue/prefer-separate-static-class`  | error  |  ✅  |
| `vue/prefer-true-attribute-shorthand`  | error  |  ✅  |
| `vue/require-explicit-slots`  | error  |  ✅  |
| `vue/require-macro-variable-name`  | error  |  ✅  |


**Warn rules**

|    Rule name     | Type | Files updated |
| ---- | ------------- | ------------- |
| `vue/no-root-v-if`  | warn  |  ❎  |


Fixes https://linear.app/chatwoot/issue/CW-3492/vue-eslint-rules

## Type of change

- [x] New feature (non-breaking change which adds functionality)


## Checklist:

- [x] My code follows the style guidelines of this project
- [x] I have performed a self-review of my code
- [x] I have commented on my code, particularly in hard-to-understand
areas
- [ ] I have made corresponding changes to the documentation
- [x] My changes generate no new warnings
- [x] I have added tests that prove my fix is effective or that my
feature works
- [x] New and existing unit tests pass locally with my changes
- [ ] Any dependent changes have been merged and published in downstream
modules

---------

Co-authored-by: Fayaz Ahmed <fayazara@gmail.com>
Co-authored-by: Muhsin Keloth <muhsinkeramam@gmail.com>
Co-authored-by: Shivam Mishra <scm.mymail@gmail.com>
Co-authored-by: Pranav <pranav@chatwoot.com>

app/javascript/dashboard/components/widgets/conversation/MessagePreview.vue

@@ -1,51 +1,3 @@
-<template>
-  <div class="overflow-hidden text-ellipsis whitespace-nowrap">
-    <template v-if="showMessageType">
-      <fluent-icon
-        v-if="isMessagePrivate"
-        size="16"
-        class="-mt-0.5 align-middle text-slate-600 dark:text-slate-300 inline-block"
-        icon="lock-closed"
-      />
-      <fluent-icon
-        v-else-if="messageByAgent"
-        size="16"
-        class="-mt-0.5 align-middle text-slate-600 dark:text-slate-300 inline-block"
-        icon="arrow-reply"
-      />
-      <fluent-icon
-        v-else-if="isMessageAnActivity"
-        size="16"
-        class="-mt-0.5 align-middle text-slate-600 dark:text-slate-300 inline-block"
-        icon="info"
-      />
-    </template>
-    <span v-if="message.content && isMessageSticker">
-      <fluent-icon
-        size="16"
-        class="-mt-0.5 align-middle inline-block text-slate-600 dark:text-slate-300"
-        icon="image"
-      />
-      {{ $t('CHAT_LIST.ATTACHMENTS.image.CONTENT') }}
-    </span>
-    <span v-else-if="message.content">
-      {{ parsedLastMessage }}
-    </span>
-    <span v-else-if="message.attachments">
-      <fluent-icon
-        v-if="attachmentIcon && showMessageType"
-        size="16"
-        class="-mt-0.5 align-middle inline-block text-slate-600 dark:text-slate-300"
-        :icon="attachmentIcon"
-      />
-      {{ $t(`${attachmentMessageContent}`) }}
-    </span>
-    <span v-else>
-      {{ defaultEmptyMessage || $t('CHAT_LIST.NO_CONTENT') }}
-    </span>
-  </div>
-</template>
-
 <script>
 import { MESSAGE_TYPE } from 'widget/helpers/constants';
 import messageFormatterMixin from 'shared/mixins/messageFormatterMixin';
@@ -102,3 +54,51 @@ export default {
   },
 };
 </script>
+
+<template>
+  <div class="overflow-hidden text-ellipsis whitespace-nowrap">
+    <template v-if="showMessageType">
+      <fluent-icon
+        v-if="isMessagePrivate"
+        size="16"
+        class="-mt-0.5 align-middle text-slate-600 dark:text-slate-300 inline-block"
+        icon="lock-closed"
+      />
+      <fluent-icon
+        v-else-if="messageByAgent"
+        size="16"
+        class="-mt-0.5 align-middle text-slate-600 dark:text-slate-300 inline-block"
+        icon="arrow-reply"
+      />
+      <fluent-icon
+        v-else-if="isMessageAnActivity"
+        size="16"
+        class="-mt-0.5 align-middle text-slate-600 dark:text-slate-300 inline-block"
+        icon="info"
+      />
+    </template>
+    <span v-if="message.content && isMessageSticker">
+      <fluent-icon
+        size="16"
+        class="-mt-0.5 align-middle inline-block text-slate-600 dark:text-slate-300"
+        icon="image"
+      />
+      {{ $t('CHAT_LIST.ATTACHMENTS.image.CONTENT') }}
+    </span>
+    <span v-else-if="message.content">
+      {{ parsedLastMessage }}
+    </span>
+    <span v-else-if="message.attachments">
+      <fluent-icon
+        v-if="attachmentIcon && showMessageType"
+        size="16"
+        class="-mt-0.5 align-middle inline-block text-slate-600 dark:text-slate-300"
+        :icon="attachmentIcon"
+      />
+      {{ $t(`${attachmentMessageContent}`) }}
+    </span>
+    <span v-else>
+      {{ defaultEmptyMessage || $t('CHAT_LIST.NO_CONTENT') }}
+    </span>
+  </div>
+</template>