Rearrange Link Play module

- Try to ensure thread safety by using TCP socket

latest version/run_linkplay_server.py

@@ -0,0 +1,9 @@
+import os
+import sys
+
+import linkplay_server
+
+os.chdir(sys.path[0])
+
+if __name__ == '__main__':
+    linkplay_server.link_play()