Add new component genome-browser

src/scripts/component/genome-browser.js

+import GeneComponent, { GeneData } from "./component/sequence/gene";
+import GenomeAxis from "./component/sequence/genome-axis";
+
+export default function () {
+  function genomeBrowser(_selection) { 
+    _selection.each();
+  }
+  return genomeBrowser;
+}
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