Project setup (#1)

Sets up project build and CI

Co-authored-by: Julien Valverdé <julien.valverde@mailo.com>
Reviewed-on: https://git.jvalver.de/Thilawyn/thilatrait/pulls/1

rollup.config.js

@@ -0,0 +1,22 @@
+import { defineConfig } from "rollup"
+import ts from "rollup-plugin-ts"
+import pkg from "./package.json" assert { type: "json" }
+
+
+export default defineConfig({
+    input: "src/index.ts",
+
+    plugins: [ ts() ],
+
+    output: [
+        {
+            file:    pkg.exports["."].import.default,
+            format:  "esm",
+        },
+
+        {
+            file:    pkg.exports["."].require.default,
+            format:  "cjs",
+        },
+    ],
+})