add dynamic verison file

src/ez_lan_manager/services/ConfigurationService.py

@@ -12,6 +12,13 @@ logger = logging.getLogger(__name__.split(".")[-1])
 
 class ConfigurationService:
     def __init__(self, config_file_path: Path) -> None:
+        try:
+            with open(from_root("VERSION"), "r") as version_file:
+                self._version = version_file.read().strip()
+        except FileNotFoundError:
+            logger.warning("Could not find VERSION file, defaulting to '0.0.0'")
+            self._version = "0.0.0"
+
         try:
             with open(config_file_path, "rb") as config_file:
                 self._config = tomllib.load(config_file)
@@ -81,3 +88,7 @@ class ConfigurationService:
         except KeyError:
             logger.fatal("Error loading seating configuration, exiting...")
             sys.exit(1)
+
+    @property
+    def APP_VERSION(self) -> str:
+        return self._version