feat: make sure cli works without pip install

source from CCBR/CHAMPAGNE#180

bin/redirect

@@ -67,4 +67,4 @@ elif [[ $ISFRCE == true ]];then
 	export PATH="/mnt/projects/CCBR-Pipelines/bin:$PATH"
 fi
 
-${TOOLDIR}/src/renee/__main__.py "$@" || true
+${TOOLDIR}/main.py "$@" || true

main.py

@@ -0,0 +1,16 @@
+#!/usr/bin/env python
+import os
+import re
+import sys
+
+# add script directory to the path to allow champagne CLI to work out-of-the-box
+# without the need to install it via pip first
+SCRIPT_DIR = os.path.join(os.path.dirname(os.path.abspath(__file__)), "src", "renee")
+sys.path.append(SCRIPT_DIR)
+from src.renee.__main__ import main
+
+if (
+    __name__ == "__main__"
+):  # this block is adapted from the executable file created by `pip install`
+    sys.argv[0] = re.sub(r"(-script\.pyw|\.exe)?$", "", sys.argv[0])
+    sys.exit(main())