feat(cod-gen): change raw types generation to have proper typehints

[Danipulok]

What this PR does?

• Change generation of pyrogram/raw/base* files to get proper typehints;

MRE (code to check if everything works properly and shows typehints):

import asyncio

from pyrogram import Client, raw


async def main() -> None:
    client = Client(
        name="account",
        api_id=8,
        api_hash="7245de8e747a0d6fbe11f7cc14fcc0bb",
    )

    await client.start()

    peer_id = 111
    peer = await client.resolve_peer(peer_id)
    result: raw.types.messages.PeerDialogs = await client.invoke(
        raw.functions.messages.GetPeerDialogs(
            peers=[peer],
        )
    )

    print(result.dialogs[0].read_outbox_max_id)
    await client.stop()


if __name__ == "__main__":
    loop = asyncio.new_event_loop()
    loop.run_until_complete(main())

Before (current code) / After (PR):

Type hints:

Before:

After:

Generated file (single type):

Before:


After:

Generated file (unions):

Before:


After:

[Danipulok]

Closed in favor of #151