Add ApiFetcher to make requests to the server.

src/fetcher/v2/api_fetcher.py

@@ -0,0 +1,37 @@
+import aiohttp
+import asyncio
+import ujson
+
+class ApiFetcher:
+    def __init__(self, base_url: str, session):
+        self.__base_url = base_url
+        self.__session = session
+
+    async def fetch_json(self, endpoint: str) -> (int, dict):
+        """
+        Gets a JSON payload from the API endpoint.
+
+        url (str): the JSON payload will be gotten to the URL.
+        context (dict): the dictionary that will be sended as a JSON payload.
+        """
+        url = f"{self.__base_url}{endpoint}"
+
+        async with self.__session.get(url) as response:
+            status = response.status
+            json_data = await response.json()
+            return (status, json_data)
+
+    async def send_json(self, endpoint: str, context: dict) -> (int, dict):
+        """
+        Sends a JSON payload to the API endpoint.
+
+        url (str): the JSON payload will be sent to the API endpoint.
+        context (dict): the dictionary that will be sent as a JSON payload.
+        """
+        url = f"{self.__base_url}{endpoint}"
+
+        async with self.__session.get(url) as session:
+            await session.post(url, json=context)
+            json_data = await session.json()
+            return (session.status, json_data)
+