Try to simplify trooper counter

src/import_external_resources.js

@@ -0,0 +1,15 @@
+import mapsheets from './assets/images/mapsheets.svg';
+import counters from './assets/images/counters.svg';
+
+const files = {
+  'mapsheets.svg': mapsheets,
+  'counters.svg': counters
+}
+
+document.querySelectorAll('use[data-href*=".svg"').forEach(el => {
+  const [filename] = el.dataset.href.match(/.+\.svg/g)
+    , href = el.dataset.href.replace(filename, files[filename].split('/').pop())
+    ;
+
+  el.setAttributeNS(null, 'href', href);
+});