chore: add tests, gh actions and prettier config

test/project/foo-bar/index.js

@@ -0,0 +1,10 @@
+/**
+ * Matches any unicode character between "foo" and "bar"
+ * @param {string} str
+ * @returns {boolean}
+ */
+function fooBar(str) {
+  return str.match(/\p{L}/gu)
+}
+
+module.exports = fooBar