Implement the rest api for get requests

backend/rest_api.py

@@ -0,0 +1,20 @@
+from flask import Flask, send_file, abort, Response
+from os import path
+
+
+app: Flask = Flask(__name__)
+
+@app.get("/")
+@app.get("/<url_path>")
+def handle_get(url_path: str = "index.html") -> Response:
+    """
+    Handle all get requests that are made.
+    """
+    requested_file_path: str = \
+            path.abspath(path.join(path.curdir, "..", "frontend", url_path))
+    response: Response = send_file(requested_file_path)
+    response.status = 200
+    if path.isfile(requested_file_path):
+        print('a')
+        return send_file(requested_file_path)
+    abort(404)