build: switch from yarn to npm to manage js dependencies and move js contents to root

yarn v1 is being deprecated and starts to have some issues

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

src/components/Event/EventBanner.vue

@@ -0,0 +1,16 @@
+<template>
+  <div class="flex justify-center max-h-80">
+    <lazy-image-wrapper :picture="picture" />
+  </div>
+</template>
+<script lang="ts" setup>
+import { IMedia } from "@/types/media.model";
+import LazyImageWrapper from "../Image/LazyImageWrapper.vue";
+
+withDefaults(
+  defineProps<{
+    picture: IMedia | null;
+  }>(),
+  { picture: null }
+);
+</script>