Update the readme (#856)

Remove reference to Volar in the README.

README.md

@@ -193,22 +193,11 @@ The app is built using [Vue](https://vuejs.org/). This information should help g
 
 ## 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) + [Vitest](https://marketplace.visualstudio.com/items?itemName=vitest.explorer).
+[VSCode](https://code.visualstudio.com/) with [Vitest](https://marketplace.visualstudio.com/items?itemName=vitest.explorer), [ESLint](https://marketplace.visualstudio.com/items?itemName=dbaeumer.vscode-eslint), and [Cypress Helper](https://marketplace.visualstudio.com/items?itemName=shevtsov.vscode-cy-helper)
 
-## Type Support for `.vue` Imports in TS
+**OR**
 
-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/).
+[VSCodium](https://vscodium.com/) with the above extensions from [OpenVSX Registry](https://open-vsx.org/).
 
 ## Project Setup
 
@@ -285,4 +274,4 @@ MIT, see [LICENSE](LICENSE) for details.
 * Basic utilities from [xen-dev-utils](https://github.com/xenharmonic-devs/xen-dev-utils)
 * Lattice tools [ji-lattice](https://github.com/xenharmonic-devs/ji-lattice)
 * Synth for making sound [sw-synth](https://github.com/xenharmonic-devs/sw-synth)
-* Keyboard layout [isomorphic-qwerty](https://github.com/xenharmonic-devs/isomorphic-qwerty)
+* Keyboard layout [isomorphic-qwerty](https://github.com/xenharmonic-devs/isomorphic-qwerty)