Significantly clean-up imports

Sure wish I would've automated this.

client/tests/auth_key_test.py

@@ -1,4 +1,4 @@
-from telethon._impl.crypto.auth_key import AuthKey
+from telethon._impl.crypto import AuthKey
 
 
 def get_auth_key() -> AuthKey:

client/tests/authentication_test.py

@@ -1,4 +1,4 @@
-from telethon._impl.crypto.auth_key import AuthKey
+from telethon._impl.crypto import AuthKey
 from telethon._impl.mtproto.authentication import (
     CreatedKey,
     _do_step1,

client/tests/client_test.py

@@ -2,10 +2,8 @@ import os
 import random
 
 from pytest import mark
-from telethon._impl.client.client.client import Client
-from telethon._impl.client.client.net import Config
-from telethon._impl.session.message_box.defs import Session
-from telethon._impl.tl.mtproto import functions, types
+from telethon import Client, Config, Session
+from telethon import _tl as tl
 
 
 @mark.api
@@ -27,6 +25,6 @@ async def test_ping_pong() -> None:
     assert client.connected
 
     ping_id = random.randrange(-(2**63), 2**63)
-    pong = await client(functions.ping(ping_id=ping_id))
-    assert isinstance(pong, types.Pong)
+    pong = await client(tl.mtproto.functions.ping(ping_id=ping_id))
+    assert isinstance(pong, tl.mtproto.types.Pong)
     assert pong.ping_id == ping_id

client/tests/crypto_test.py

@@ -1,13 +1,13 @@
 from telethon._impl.crypto import (
+    AuthKey,
     Side,
-    _do_encrypt_data_v2,
     calc_key,
     decrypt_data_v2,
     decrypt_ige,
     encrypt_ige,
     generate_key_data_from_nonce,
 )
-from telethon._impl.crypto.auth_key import AuthKey
+from telethon._impl.crypto.crypto import _do_encrypt_data_v2
 
 
 def get_test_auth_key() -> AuthKey:

client/tests/factorize_test.py

@@ -1,4 +1,4 @@
-from telethon._impl.crypto.factorize import factorize
+from telethon._impl.crypto import factorize
 
 
 def test_factorization_1() -> None:

client/tests/mtproto_test.py

@@ -1,8 +1,8 @@
 import struct
 
 from pytest import raises
-from telethon._impl.crypto.auth_key import AuthKey
-from telethon._impl.mtproto.mtp import Encrypted, Plain, RpcError
+from telethon._impl.crypto import AuthKey
+from telethon._impl.mtproto import Encrypted, Plain, RpcError
 from telethon._impl.tl.mtproto.types import RpcError as GeneratedRpcError
 
 

client/tests/mtsender_test.py

@@ -2,8 +2,8 @@ import asyncio
 import logging
 
 from pytest import LogCaptureFixture, mark
-from telethon._impl.mtproto.transport.full import Full
-from telethon._impl.mtsender.sender import connect
+from telethon._impl.mtproto import Full
+from telethon._impl.mtsender import connect
 from telethon._impl.tl import LAYER, abcs, functions, types
 
 TELEGRAM_TEST_DC_2 = "149.154.167.40:443"

client/tests/packed_chat_test.py

@@ -1,4 +1,4 @@
-from telethon._impl.session.chat.packed import PackedChat, PackedType
+from telethon._impl.session import PackedChat, PackedType
 
 
 def test_hash_optional() -> None:

client/tests/reader_test.py

@@ -1,8 +1,7 @@
 import struct
 
 from pytest import mark
-from telethon._impl.tl.core import Reader
-from telethon._impl.tl.core.serializable import Serializable
+from telethon._impl.tl.core import Reader, Serializable
 from telethon._impl.tl.mtproto.types import BadServerSalt
 from telethon._impl.tl.types import GeoPoint
 

client/tests/transport/abridged_test.py

@@ -1,7 +1,7 @@
 from typing import Tuple
 
 from pytest import raises
-from telethon._impl.mtproto.transport.abridged import Abridged
+from telethon._impl.mtproto import Abridged
 
 
 class Output(bytearray):

client/tests/transport/full_test.py

@@ -1,7 +1,7 @@
 from typing import Tuple
 
 from pytest import raises
-from telethon._impl.mtproto.transport.full import Full
+from telethon._impl.mtproto import Full
 
 
 class Output(bytearray):

client/tests/transport/intermediate_test.py

@@ -1,7 +1,7 @@
 from typing import Tuple
 
 from pytest import raises
-from telethon._impl.mtproto.transport.intermediate import Intermediate
+from telethon._impl.mtproto import Intermediate
 
 
 class Output(bytearray):