Adds Middleware API (#40)

* Adds test project

* Adds e2e for end-2-end tests

* Update gitignore

* Update loaders

* Creates test project

* v0.1.27

* Upgrade

* dependency fixes

* Load project plugins in the plugin loader

* Issue with instanceof

* Fixes versioning issues

* Adds medusa middleware api

* Adds documentation

* Fixes tests

e2e/prod-project/src/api/index.js

@@ -0,0 +1,17 @@
+import { Router } from "express"
+
+export default () => {
+  const app = Router()
+
+  app.get("/project-root", async (req, res, next) => {
+    try {
+      const testService = req.scope.resolve("testService")
+      const newHi = await testService.sayHi()
+      res.status(200).json(newHi)
+    } catch (e) {
+      next(e)
+    }
+  })
+
+  return app
+}