Add Vue gui project (#7696)

Add a separate `gui2` project with Vue application. Does not modify any existing project files.

![image](https://github.com/enso-org/enso/assets/919491/c7a83521-bf83-4c6a-8d17-91c5eab1f827)

# Important Notes
Currently not integrated with existing build and testing system.

.github/CODEOWNERS

@@ -24,6 +24,7 @@ Cargo.toml
 /app/gui/ @MichaelMauderer @farmaazon @mwu-tow @kazcw @vitvakatu @Frizi
 /app/gui/view/ @MichaelMauderer @farmaazon @kazcw @vitvakatu @Frizi
 /app/gui/view/graph-editor/src/builtin/visualization/java_script/ @MichaelMauderer @farmaazon @kazcw @jdunkerley @vitvakatu @Frizi
+/app/gui2/ @Frizi
 
 # Engine (old)
 # This section should be removed once the engine moves to /app/engine

app/gui2/.eslintrc.cjs

@@ -0,0 +1,15 @@
+/* eslint-env node */
+require('@rushstack/eslint-patch/modern-module-resolution')
+
+module.exports = {
+  root: true,
+  extends: [
+    'plugin:vue/vue3-essential',
+    'eslint:recommended',
+    '@vue/eslint-config-typescript',
+    '@vue/eslint-config-prettier/skip-formatting',
+  ],
+  parserOptions: {
+    ecmaVersion: 'latest',
+  },
+}

app/gui2/.gitignore

@@ -0,0 +1,24 @@
+# Logs
+logs
+*.log
+npm-debug.log*
+
+node_modules
+.DS_Store
+dist
+dist-ssr
+coverage
+*.local
+
+# Editor directories and files
+.vscode/*
+!.vscode/extensions.json
+.idea
+*.suo
+*.ntvs*
+*.njsproj
+*.sln
+*.sw?
+
+test-results/
+playwright-report/

app/gui2/.prettierrc.json

@@ -0,0 +1,8 @@
+{
+  "$schema": "https://json.schemastore.org/prettierrc",
+  "semi": false,
+  "tabWidth": 2,
+  "singleQuote": true,
+  "printWidth": 100,
+  "trailingComma": "all"
+}

app/gui2/.vscode/extensions.json

@@ -0,0 +1,9 @@
+{
+  "recommendations": [
+    "Vue.volar",
+    "Vue.vscode-typescript-vue-plugin",
+    "ms-playwright.playwright",
+    "dbaeumer.vscode-eslint",
+    "esbenp.prettier-vscode"
+  ]
+}

app/gui2/README.md

@@ -0,0 +1,71 @@
+# enso-ide
+
+This template should help get you started developing with Vue 3 in Vite.
+
+## Recommended IDE Setup
+
+[VSCode](https://code.visualstudio.com/) + [Volar](https://marketplace.visualstudio.com/items?itemName=Vue.volar) (and disable Vetur) + [TypeScript Vue Plugin (Volar)](https://marketplace.visualstudio.com/items?itemName=Vue.vscode-typescript-vue-plugin).
+
+## Type Support for `.vue` Imports in TS
+
+TypeScript cannot handle type information for `.vue` imports by default, so we replace the `tsc` CLI with `vue-tsc` for type checking. In editors, we need [TypeScript Vue Plugin (Volar)](https://marketplace.visualstudio.com/items?itemName=Vue.vscode-typescript-vue-plugin) to make the TypeScript language service aware of `.vue` types.
+
+If the standalone TypeScript plugin doesn't feel fast enough to you, Volar has also implemented a [Take Over Mode](https://github.com/johnsoncodehk/volar/discussions/471#discussioncomment-1361669) that is more performant. You can enable it by the following steps:
+
+1. Disable the built-in TypeScript Extension
+   1. Run `Extensions: Show Built-in Extensions` from VSCode's command palette
+   2. Find `TypeScript and JavaScript Language Features`, right click and select `Disable (Workspace)`
+2. Reload the VSCode window by running `Developer: Reload Window` from the command palette.
+
+## Customize configuration
+
+See [Vite Configuration Reference](https://vitejs.dev/config/).
+
+## Project Setup
+
+```sh
+npm install
+```
+
+### Compile and Hot-Reload for Development
+
+```sh
+npm run dev
+```
+
+### Type-Check, Compile and Minify for Production
+
+```sh
+npm run build
+```
+
+### Run Unit Tests with [Vitest](https://vitest.dev/)
+
+```sh
+npm run test:unit
+```
+
+### Run End-to-End Tests with [Playwright](https://playwright.dev)
+
+```sh
+# Install browsers for the first run
+npx playwright install
+
+# When testing on CI, must build the project first
+npm run build
+
+# Runs the end-to-end tests
+npm run test:e2e
+# Runs the tests only on Chromium
+npm run test:e2e -- --project=chromium
+# Runs the tests of a specific file
+npm run test:e2e -- tests/example.spec.ts
+# Runs the tests in debug mode
+npm run test:e2e -- --debug
+```
+
+### Lint with [ESLint](https://eslint.org/)
+
+```sh
+npm run lint
+```

app/gui2/e2e/tsconfig.json

@@ -0,0 +1,4 @@
+{
+  "extends": "@tsconfig/node18/tsconfig.json",
+  "include": ["./**/*"]
+}

app/gui2/e2e/vue.spec.ts

@@ -0,0 +1,8 @@
+import { test, expect } from '@playwright/test'
+
+// See here how to get started:
+// https://playwright.dev/docs/intro
+test('visits the app root url', async ({ page }) => {
+  await page.goto('/')
+  await expect(page.locator('div.greetings > h1')).toHaveText('You did it!')
+})

app/gui2/env.d.ts

@@ -0,0 +1,6 @@
+/// <reference types="vite/client" />
+
+module 'y-websocket' {
+  // hack for bad module resolution
+  export * from 'node_modules/y-websocket/dist/src/y-websocket'
+}

app/gui2/index.html

@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <link rel="icon" href="/favicon.ico" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>Vite App</title>
+  </head>
+  <body>
+    <div id="app"></div>
+    <script type="module" src="/src/main.ts"></script>
+  </body>
+</html>