feat(home): add theme and alarm buttons (dummy), and refactor to have less components

app/components/Home/BottomScreen/Button.vue

@@ -0,0 +1,17 @@
+<script setup lang="ts">
+const props = defineProps<{
+  x: number;
+  y: number;
+  opacity: number;
+  image: HTMLImageElement;
+}>();
+
+useRender((ctx) => {
+  ctx.globalAlpha = props.opacity;
+  ctx.drawImage(props.image, props.x, props.y);
+});
+
+defineOptions({
+  render: () => null,
+});
+</script>