moved run_pickled into a separate scripts dir

Author: tclose

pydra/scripts/__init__.py

@@ -0,0 +1,3 @@
+# Although the Python files in this directory are meant to be run separately,
+# we add a __init__.py file to make it a package that can easily be discovered
+# within the installation directory

pydra/engine/run_pickled.py renamed to pydra/scripts/run_pickled.py

@@ -15,6 +15,7 @@
 import builtins
 import pkgutil
 import logging
+import pydra.scripts
 from ._version import __version__
 
 
@@ -24,6 +25,8 @@
     from pydra.compose import workflow
 
 
+SCRIPTS_DIR = Path(pydra.scripts.__file__).parent
+
 PYDRA_ATTR_METADATA = "__PYDRA_METADATA__"
 
 TaskType = ty.TypeVar("TaskType", bound="Task")