refactor Paths and update build workflow

+ rename app_dir -> config_dir and config_dir to config_parent
+ bundle web client as zip
+ bundle and extract client zip when running pyinstaller builds
+ installer pyinstaller as main dependency
+ remove fallback client flag
+ handle already used port
+ add assethandler class
+ remove some startup logs
+ ignore wheels and client.zip files

src/swingmusic/logger.py

@@ -229,4 +229,3 @@ def setup_logger(app_dir:Path, debug=False):
 
     global log
     log = logging.getLogger(__name__)
-    log.info("setup successfully")