add readmes with first pointers

backend/README.md

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+# Backend
+
+This repository contains the backend code for the application. It utilizes FastAPI that allows to quickly create a RESTful API that exposes the endpoints of the route optimizer.
+
+
+## Getting Started
+- The code of the python application is located in the `src` directory.
+- Package management is handled with `pipenv` and the dependencies are listed in the `Pipfile`.
+- Since the application is aimed to be deployed in a container, the `Dockerfile` is provided to build the image.
+
+### Deployment
+To deploy the backend docker container, we use kubernetes. The deployment configuration is located under [https://git.kluster.moll.re/anydev/deployment-backend/](https://git.kluster.moll.re/anydev/deployment-backend/).
+
+
+## Development
+TBD