Ingestor tidy up

[miratepuffin]

For the pandas and Parquet loader we want to do the following:

• Bring the order of required arguments in line with add_node/add_edge - this means instead of src,dst, time it should be time, src, dst. Bring pandas/parquet loaders api args inline with add_nodes/add_edges #1673

  • This should be on the following functions load_edge_props_from_pandas, load_edges_from_pandas, load_from_pandas, load_node_props_from_pandas, load_nodes_from_pandas, load_edge_props_from_parquet, load_edges_from_pandas, load_from_pandas, load_node_props_from_pandas, load_nodes_from_parquet

• Any reference to const_properties should be changed to constant_properties

• Add node_type col to load_node_props_from_pandas/parquet #1674

• We need to replace layer/layer_in_df with layer_nameand layer_col: Option<&str> and simply raise a runtime error if both are specified at the same time

• We need to replace node_type/node_type_in_df with node_typeand node_type_col: Option<&str> and simply raise a runtime error if both are specified at the same time

• Will need to update docs when this is done