refactor: cypress markers in signup signin page

Signed-off-by: Raju Udava <86527202+dstala@users.noreply.github.com>

packages/nc-gui-v2/app.vue

@@ -59,14 +59,14 @@ const sidebarOpen = computed({
 
         <template v-if="$state.signedIn.value">
           <a-dropdown :trigger="['click']">
-            <MdiDotsVertical class="md:text-xl cursor-pointer" @click.prevent />
+            <MdiDotsVertical class="md:text-xl cursor-pointer nc-user-menu" @click.prevent />
 
             <template #overlay>
               <a-menu class="!py-0 nc-user-menu min-w-32 dark:(!bg-gray-800) leading-8 !rounded">
                 <a-menu-item key="0" class="!rounded-t">
                   <nuxt-link v-t="['c:navbar:user:email']" class="group flex items-center no-underline py-2" to="/user">
                     <MdiAt class="mt-1 group-hover:text-success" />&nbsp;
-                    <span class="prose group-hover:text-black">{{ email }}</span>
+                    <span class="prose group-hover:text-black nc-user-menu-email">{{ email }}</span>
                   </nuxt-link>
                 </a-menu-item>
 
@@ -75,7 +75,7 @@ const sidebarOpen = computed({
                 <a-menu-item key="1" class="!rounded-b">
                   <div v-t="['a:navbar:user:sign-out']" class="group flex items-center py-2" @click="signOut">
                     <MdiLogout class="dark:text-white group-hover:(!text-red-500)" />&nbsp;
-                    <span class="prose font-semibold text-gray-500 group-hover:text-black">{{ $t('general.signOut') }}</span>
+                    <span class="prose font-semibold text-gray-500 group-hover:text-black nc-user-menu-signout">{{ $t('general.signOut') }}</span>
                   </div>
                 </a-menu-item>
               </a-menu>

packages/nc-gui-v2/pages/signin.vue

@@ -74,7 +74,7 @@ const resetError = () => {
       ref="formValidator"
       :model="form"
       layout="vertical"
-      class="signin h-[calc(100%_+_90px)] min-h-[600px] flex justify-center items-center"
+      class="signin h-[calc(100%_+_90px)] min-h-[600px] flex justify-center items-center nc-form-signin"
       @finish="signIn"
     >
       <div class="h-full w-full flex flex-col flex-wrap items-center pt-[100px]">

packages/nc-gui-v2/pages/signup.vue

@@ -71,7 +71,7 @@ const resetError = () => {
       ref="formValidator"
       :model="form"
       layout="vertical"
-      class="signup h-[calc(100%_+_90px)] min-h-[600px] flex justify-center items-center"
+      class="signup h-[calc(100%_+_90px)] min-h-[600px] flex justify-center items-center nc-form-signup"
       @finish="signUp"
     >
       <div class="h-full w-full flex flex-col flex-wrap pt-[100px]">