(bump:patch) Feat: Show app version in the Help page (#68)

* typo

* show version in the Help page

* update docs

* pump duckduckgo-search

* allow app version to be set by env var

flowsettings.py

@@ -1,4 +1,5 @@
 import os
+from importlib.metadata import version
 from inspect import currentframe, getframeinfo
 from pathlib import Path
 
@@ -14,6 +15,15 @@ this_dir = Path(this_file).parent
 # change this if your app use a different name
 KH_PACKAGE_NAME = "kotaemon_app"
 
+KH_APP_VERSION = os.environ.get("KH_APP_VERSION", None)
+if not KH_APP_VERSION:
+    try:
+        # Caution: This might produce the wrong version
+        # https://stackoverflow.com/a/59533071
+        KH_APP_VERSION = version(KH_PACKAGE_NAME)
+    except Exception as e:
+        print(f"Failed to get app version: {e}")
+
 # App can be ran from anywhere and it's not trivial to decide where to store app data.
 # So let's use the same directory as the flowsetting.py file.
 KH_APP_DATA_DIR = this_dir / "ktem_app_data"