fix client: download fallback to github release client

+ add fallback release version data to version.txt
+ move classproperty class to utils
+ update Dockerfile to install from source using pip install
+ move version info to Metadata class in settings.py

src/swingmusic/start_info_logger.py

@@ -1,10 +1,9 @@
-from swingmusic.settings import TCOLOR, Paths
+from swingmusic.settings import TCOLOR, Metadata, Paths
 from swingmusic.utils.network import get_ip
-from importlib import metadata
 
 
 def log_startup_info(host: str, port: int):
-    print(f"{TCOLOR.HEADER}Swing Music v{metadata.version('swingmusic')} {TCOLOR.ENDC}")
+    print(f"{TCOLOR.HEADER}Swing Music v{Metadata.version} {TCOLOR.ENDC}")
 
     addresses = [host]
 
@@ -14,8 +13,6 @@ def log_startup_info(host: str, port: int):
 
     print("Server running on:\n")
     for address in addresses:
-        print(
-            f"{TCOLOR.OKGREEN}http://{address}:{port}{TCOLOR.ENDC}"
-        )
+        print(f"{TCOLOR.OKGREEN}http://{address}:{port}{TCOLOR.ENDC}")
 
     print(f"\n{TCOLOR.YELLOW}Data folder: {Paths().config_dir}{TCOLOR.ENDC}\n")