feat: source code link in about page

src/App.jsx

@@ -31,6 +31,8 @@ import socket from "./components/socket";
 import Settings from "./pages/settings";
 import { useState } from "react";
 import { localesProcess } from "./components/utils";
+import { ButtonWithIcon } from "./components/button";
+import { LinkIcon } from "@heroicons/react/24/outline";
 
 function App() {
   Storage.prototype.setObj = function (key, obj) {
@@ -82,9 +84,16 @@ function App() {
           <Route
             path="/about"
             element={
+              <>
+                <ButtonWithIcon
+                  icon={LinkIcon}
+                  text={locals.SourceCode}
+                  href="https://github.com/artegoser/AnoPaper"
+                />
                 <div className="col-span-4 md">
                   <RenderMarkdown>{locals.about_md}</RenderMarkdown>
                 </div>
+              </>
             }
           />
           <Route path="/notes" element={<Notes />} />

src/localisation/en.js

@@ -74,6 +74,7 @@ let en = {
   NoNotesFound: "No notes found",
   LocalNote: "Local",
   Menu: "Menu",
+  SourceCode: "Source code",
 };
 
 export default en;

src/localisation/ru.js

@@ -76,6 +76,7 @@ let ru = {
   LocalNote: "Локальная",
   PublishNote: "Публичная",
   Menu: "Меню",
+  SourceCode: "Исходный код",
 };
 
 export default ru;