Split up the ControlPoint.tsx monolith.

This is in need of some serious refactoring so that
https://github.com/dcs-liberation/dcs_liberation/issues/2388 can be
fixed.

client/src/components/controlpoints/EventHandlers.ts

@@ -0,0 +1,22 @@
+import { ControlPoint } from "../../api/_liberationApi";
+import backend from "../../api/backend";
+
+function openInfoDialog(controlPoint: ControlPoint) {
+  backend.post(`/qt/info/control-point/${controlPoint.id}`);
+}
+
+function openNewPackageDialog(controlPoint: ControlPoint) {
+  backend.post(`/qt/create-package/control-point/${controlPoint.id}`);
+}
+
+export const makeLocationMarkerEventHandlers = (controlPoint: ControlPoint) => {
+  return {
+    click: () => {
+      openInfoDialog(controlPoint);
+    },
+
+    contextmenu: () => {
+      openNewPackageDialog(controlPoint);
+    },
+  };
+};