Add settings to use npm run dev server with cista -l :8000 backend

cista-front/vite.config.ts

@@ -9,6 +9,15 @@ import { AntDesignVueResolver } from "unplugin-vue-components/resolvers";
 // @ts-ignore
 import pluginRewriteAll from 'vite-plugin-rewrite-all';
 
+// Development mode:
+// npm run dev           # Run frontend that proxies to dev_backend
+// cista -l :8000 --dev  # Run backend
+const dev_backend = {
+  target: "http://localhost:8000",
+  changeOrigin: false,  // Use frontend "host" to match "origin" from browser
+  ws: true,
+}
+
 // https://vitejs.dev/config/
 export default defineConfig({
   plugins: [
@@ -34,6 +43,14 @@ export default defineConfig({
       '@': fileURLToPath(new URL('./src', import.meta.url))
     }
   },
+  server: {
+    proxy: {
+      "/api": dev_backend,
+      "/files": dev_backend,
+      "/login": dev_backend,
+      "/logout": dev_backend,
+    }
+  },
   build: {
     outDir: "../cista/wwwroot",
     emptyOutDir: true,