feat: add version and contribution note

src/App.vue

@@ -1,5 +1,6 @@
 <template>
   <Editor />
+  <Version />
 </template>
 
 <script setup lang="ts">
@@ -8,6 +9,7 @@ import Editor from "./components/Editor.vue";
 import { useSdkStore } from "./stores/sdkStore";
 import { onMounted } from "vue";
 import { useContractStore } from "./stores/contractStore";
+import Version from "./components/Version.vue";
 
 const sdkStore = useSdkStore();
 const { initSdk } = sdkStore;

src/components/Version.vue

@@ -0,0 +1,18 @@
+<template>
+  <div class="w-full text-center mb-2 text-gray-500 text-sm">
+    <div>
+      Contribute on GitHub:
+      <a
+        class="underline text-blue-400"
+        target="_blank"
+        href="https://github.com/aeternity/aepp-contracts"
+        >https://github.com/aeternity/aepp-contracts</a
+      >
+    </div>
+    <div>Version {{ version }}</div>
+  </div>
+</template>
+<script setup lang="ts">
+// eslint-disable-next-line no-undef
+const version = __APP_VERSION__;
+</script>

src/vite-env.d.ts

@@ -1 +1,2 @@
 /// <reference types="vite/client" />
+declare const __APP_VERSION__: string;

vite.config.ts

@@ -4,4 +4,7 @@ import vue from "@vitejs/plugin-vue";
 // https://vitejs.dev/config/
 export default defineConfig({
   plugins: [vue()],
+  define: {
+    __APP_VERSION__: JSON.stringify(process.env.npm_package_version),
+  },
 });