Bundle brainstorm server dependencies instead of requiring npm install

Vendor node_modules into the repo so the brainstorm server works
immediately on fresh plugin installs without needing npm at runtime.

skills/brainstorming/scripts/node_modules/es-object-atoms/RequireObjectCoercible.js

@@ -0,0 +1,11 @@
+'use strict';
+
+var $TypeError = require('es-errors/type');
+
+/** @type {import('./RequireObjectCoercible')} */
+module.exports = function RequireObjectCoercible(value) {
+	if (value == null) {
+		throw new $TypeError((arguments.length > 0 && arguments[1]) || ('Cannot call method on ' + value));
+	}
+	return value;
+};