feat: add ru translation for index and meta

src/lib/translations/en/index.ts

@@ -1,7 +1,9 @@
 import home from './home.json'
 import materials from './materials.json'
+import page from './page.json'
 
 export default {
   ...home,
   materials,
+  page,
 }

src/lib/translations/en/page.json

@@ -0,0 +1,6 @@
+{
+  "main": {
+    "title": "Beam Calculator",
+    "desc": "Static structural analysis of simple 2d frames based on Frame3DD"
+  }
+}

src/lib/translations/ru/index.ts

@@ -1,7 +1,9 @@
 import home from './home.json'
 import materials from './materials.json'
+import page from './page.json'
 
 export default {
   ...home,
   materials,
+  page,
 }

src/lib/translations/ru/page.json

@@ -0,0 +1,6 @@
+{
+  "main": {
+    "title": "Beamcalc.net - Рассчет Балки на прогиб",
+    "desc": "Статический рассчет балки на прогиб с использование Frame3DD"
+  }
+}

src/routes/[[lang]]/+page.svelte

@@ -1,4 +1,5 @@
 <script>
+  import { t } from '$lib/translations'
   import App from "./App.svelte"
   import { browser } from "$app/environment";
   import { goto } from "$app/navigation";
@@ -12,8 +13,8 @@
 </script>
 
 <svelte:head>
-  <title>Structural calculator</title>
-  <meta name="description" content="Static structural analysis of simple 2d frames based on Frame3DD" />
+  <title>{$t("page.main.title")}</title>
+  <meta name="description" content="{$t('page.main.desc')}" />
 </svelte:head>
 
 <App />