Allow initializing with custom TomSelect configurations

app/webpacker/controllers/tom_select_controller.js

@@ -2,15 +2,18 @@ import { Controller } from "stimulus"
 import TomSelect from "tom-select"
 
 export default class extends Controller {
+  static values = { options: Object }
   static defaults = {
     maxItems: 1,
     maxOptions: null,
     plugins: ["dropdown_input"],
-    allowEmptyOption: true,
+    allowEmptyOption: true
   }
 
   connect() {
-    this.control = new TomSelect(this.element, this.constructor.defaults)
+    this.control = new TomSelect(
+      this.element, { ...this.constructor.defaults, ...this.optionsValue }
+    )
   }
 
   disconnect() {