add: first post, external posts, new comps

Add first post for monday, add external posts from other authors, add components for internal and external links

app/components/Link/External.vue

@@ -0,0 +1,14 @@
+<template>
+  <NuxtLink class="inline-flex-row text" external :to="url" target="_blank">
+    <slot/>
+    <IconLinkExternal/>
+  </NuxtLink>
+</template>
+
+<script setup lang="ts">
+type Props = {
+  url: string
+}
+
+defineProps<Props>()
+</script>