Added loaders

src/loaders/express.ts

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+import { Application } from "express";
+/**
+ * Loader for express related configurations.
+ * Configures proxy trusts, globally used middlewares and other express features.
+ */
+export default async (app: Application) => {
+	app.enable('trust proxy');
+	app.disable('x-powered-by');
+	app.disable('x-served-by');
+	return app;
+};

src/loaders/index.ts

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+import { Application } from "express";
+import expressLoader from "./express";
+import openapiLoader from "./openapi";
+
+/**
+ * Index Loader that executes the other loaders in the right order.
+ * This basicly exists for abstraction and a overall better dev experience.
+ */
+export default async (app: Application) => {
+    await openapiLoader(app);
+    await expressLoader(app);
+    return app;
+};