Move python_mpv_jsonipc in our vendor folder (#369)

* Move python_mpv_jsonipc to the vendor folder

* Adapt players code to the new path

syncplay/players/ipc_iina.py

@@ -2,7 +2,7 @@ import os.path
 import subprocess
 import time
 
-from syncplay.players.python_mpv_jsonipc.python_mpv_jsonipc import log, MPV, MPVError, MPVProcess
+from syncplay.vendor.python_mpv_jsonipc.python_mpv_jsonipc import log, MPV, MPVError, MPVProcess
 from syncplay.utils import resourcespath
 
 class IINA(MPV):

syncplay/players/mpv.py

@@ -9,11 +9,10 @@ import ast
 
 from syncplay import constants
 from syncplay.messages import getMessage
+from syncplay.players.basePlayer import BasePlayer
 from syncplay.utils import isURL, findResourcePath
 from syncplay.utils import isMacOS, isWindows, isASCII
-from syncplay.players.python_mpv_jsonipc.python_mpv_jsonipc import MPV
-
-from syncplay.players.basePlayer import BasePlayer
+from syncplay.vendor.python_mpv_jsonipc.python_mpv_jsonipc import MPV
 
 class MpvPlayer(BasePlayer):
     RE_VERSION = re.compile(r'.*mpv (\d+)\.(\d+)\.\d+.*')