Added sidebar (#224)

Co-authored-by: widlam <mikolaj.widla@gmail.com>
Reviewed-on: #224
Reviewed-by: Adam Bem <bema@noreply.example.com>
Co-authored-by: Mikolaj Widla <widlam@noreply.example.com>
Co-committed-by: Mikolaj Widla <widlam@noreply.example.com>

Frontend/src/components/sidebar/SidebarMenuElementComponent.vue

@@ -0,0 +1,32 @@
+<script setup>
+import { ref } from 'vue'
+const hiddenOrActive = ref('hidden');
+
+function switchHiddenElement(){
+    if(hiddenOrActive.value == 'hidden'){
+        hiddenOrActive.value = "active";
+    } else{
+        hiddenOrActive.value = "hidden"
+    }
+}
+
+const props = defineProps(
+    {
+        categoryName: {required : true}
+    }
+)
+
+
+</script>
+
+
+<template>
+    <li>
+        <button @click="switchHiddenElement()" type="button" class="flex items-center w-full p-2 text-gray-900 transition duration-75 rounded-lg group hover:bg-gray-100 dark:text-white dark:hover:bg-gray-700">
+            <span class="flex-1 ml-3 text-left whitespace-nowrap">{{props.categoryName}}</span>
+        </button>
+        <ul class='py-2 space-y-2 bg-gray-50 dark:bg-gray-700 rounded-xl' :class="hiddenOrActive">
+            <slot></slot>
+        </ul>
+    </li>
+</template>