feat(plugins) default plugin class and initial plugins: interact, timing and utils base

lib/plugins/CetraPlugin.js

@@ -0,0 +1,11 @@
+export default class CetraPlugin {
+	constructor() {}
+
+	register(name, id) {
+		console.log('register method not implemented', this.constructor.name);
+	}
+
+	initComponent(el) {
+		console.log('there is no init method for this element', el);
+	}
+}