Added very basic api doc chooser

ref #52

src/loaders/openapi.ts

@@ -1,5 +1,6 @@
 import { validationMetadatasToSchemas } from "class-validator-jsonschema";
-import { Application } from "express";
+import express, { Application } from "express";
+import path from 'path';
 import { getMetadataArgsStorage } from "routing-controllers";
 import { routingControllersToSpec } from "routing-controllers-openapi";
 import * as swaggerUiExpress from "swagger-ui-express";
@@ -51,12 +52,13 @@ export default async (app: Application) => {
     explorer: true,
   };
   app.use(
-    "/api/docs",
+    "/api/docs/swagger",
     swaggerUiExpress.serve,
     swaggerUiExpress.setup(spec, options)
   );
-  app.get(["/api/openapi.json", "/api/swagger.json"], (req, res) => {
+  app.get(["/api/docs/openapi.json", "/api/docs/swagger.json"], (req, res) => {
     res.json(spec);
   });
+  app.use('/api/docs', express.static(path.join(__dirname, '../static/docs'), { index: "index.html", extensions: ['html'] }));
   return app;
 };