Add api cors, create endpoints to get teams and editions, create main frontend...

Add api cors, create endpoints to get teams and editions, create main frontend component to display teams

frontend/src/vite-env.d.ts

+/// <reference types="svelte" />
+/// <reference types="vite/client" />

frontend/vite.config.js

+import { defineConfig } from 'vite'
+import { svelte } from '@sveltejs/vite-plugin-svelte'
+
+// https://vitejs.dev/config/
+export default defineConfig({
+  plugins: [svelte()]
+})