Added the basics for the session handling

Github/http.py

@@ -1,5 +1,50 @@
 #== http.py ==#
 
 import aiohttp
-import asyncio
+from types import SimpleNamespace
+
+from .exceptions import *
+from .urls import *
+
+# aiohttp request tracking / checking bits
+async def on_req_start(
+    session: aiohttp.ClientSession,
+    ctx: SimpleNamespace,
+    params: aiohttp.TraceRequestStartParams
+) -> None:
+    """Before-request hook to make sure we don't overrun the ratelimit."""
+    print(repr(session), repr(ctx), repr(params))
+
+async def on_req_end(
+    session: aiohttp.ClientSession,
+    ctx: SimpleNamespace,
+    params: aiohttp.TraceRequestEndParams
+) -> None:
+    """After-request hook to adjust remaining requests on this time frame."""
+    print(repr(session), repr(ctx), repr(params))
+
+trace_config = aiohttp.TraceConfig()
+trace_config.on_request_start.append(on_req_start)
+trace_config.on_request_end.append(on_req_end)
+
+async def make_session(*, headers: dict[str, str]) -> aiohttp.ClientSession:
+    """This makes the ClientSession, attaching the trace config and ensuring a UA header is present."""
+    if not headers.get('User-Agent'):
+        headers['User-Agent'] = 'Github-API-Wrapper'
+
+    session = aiohttp.ClientSession(
+        headers=headers,
+        trace_configs=[trace_config]
+    )
+    return session
+
+# user-related functions / utils
+GitHubUserData = dict[str, str|int]
+
+async def get_user(session: aiohttp.ClientSession, *, _username: str) -> GitHubUserData:
+    """Returns a user's public data in JSON format."""
+    result = await session.get(USERS_URL.format(_username))
+    if result.status == 200:
+        return await result.json()
+    raise UserNotFound()