feat: add app version to footer (#27)

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@topos-protocol/explorer",
-  "version": "1.0.0",
+  "version": "0.4.0",
   "main": "index.js",
   "scripts": {
     "dev": "vite",

src/components/Footer.tsx

@@ -1,9 +1,18 @@
-import { Layout } from 'antd'
+import { Col, Layout, Row } from 'antd'
+
+import packageJson from '../../package.json'
 
 const { Footer: AntdFooter } = Layout
 
-const Footer = () => (
-  <AntdFooter style={{ textAlign: 'center' }}>zk Foundation ©2023</AntdFooter>
-)
+const Footer = () => {
+  return (
+    <AntdFooter>
+      <Row justify="space-between">
+        <Col>zk Foundation © {new Date().getFullYear()}</Col>
+        <Col>v{packageJson.version}</Col>
+      </Row>
+    </AntdFooter>
+  )
+}
 
 export default Footer