refactor(champs): refactor champs components to use typescript

app/javascript/components/ComboRegionsSearch.tsx

@@ -0,0 +1,20 @@
+import React from 'react';
+import { QueryClientProvider } from 'react-query';
+
+import ComboSearch, { ComboSearchProps } from './ComboSearch';
+import { queryClient } from './shared/queryClient';
+
+export default function ComboRegionsSearch(
+  props: ComboSearchProps<{ code: string; nom: string }>
+) {
+  return (
+    <QueryClientProvider client={queryClient}>
+      <ComboSearch
+        {...props}
+        scope="regions"
+        minimumInputLength={0}
+        transformResult={({ code, nom }) => [code, nom]}
+      />
+    </QueryClientProvider>
+  );
+}