3D-e-Chem/knime-python-node-archetype: v1.2.2

Generates KNIME workflow node skeleton repository with sample code. The node executes a Python script which is included in the skeleton. The script uses dictionary for dialog options and Pandas DataFrames as input and output. Added Instruction to add generated repo to 3D-e-Chem KNIME feature (https://github.com/3D-e-Chem/knime-node-collection/issues/3