Migrate prettier config to javascript (#3121)

Newer versions of prettier works badly with vscode prettier extension
when using a json config file.

Author: AndreasArvidsson

.prettierrc

@@ -137,6 +137,7 @@ const disabledTypeCheckConfig: ConfigWithExtends = {
     "**/docusaurus.config.mts",
     "**/eslint.config.mts",
     "**/mdx-components.tsx",
+    "prettier.config.cjs",
     "typings/**",
     "**/*.js",
     "**/*.mjs",

eslint.config.mts

@@ -0,0 +1,8 @@
+/* global module, require */
+
+/** @type {import("prettier").Config} */
+module.exports = {
+  trailingComma: "all",
+
+  plugins: [require.resolve("prettier-plugin-tailwindcss")],
+};