Revise variable names and file names

app/src/components/hintPart.vue

@@ -0,0 +1,9 @@
+<script setup></script>
+
+<template>
+  <font-awesome-icon :icon="['far', 'lightbulb']" class="text-yellow-200 p-1" />
+  <h1 class="inline text-text font-xl">Hint</h1>
+  <div id="hint">
+    <p class="text-text">--Hint--</p>
+  </div>
+</template>