feat(componentLoader): Add external component loader module

For render hijacking to work, imports need to be peformed at core level.
This loader ensures that Webpack is able to resolve the paths to the
external components' code, without the need for extra loaders or custom
built plugins.

Signed-off-by: Adrian Oprea <adrian@oprea.rocks>

app/javascript/src/componentLoader/config.js

@@ -0,0 +1,3 @@
+export default {
+
+}

app/javascript/src/componentLoader/index.js

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+import { createLoader } from 'react-hijack';
+
+const componentLoader = createLoader((module) => import('' + module));
+
+export default componentLoader;
+