Add (curr_node_id, bag, error) to process table

[brunolnetto]

There is no community available except the FlowBuild documentation.

What would you like to be added:
Columns (curr_node_id, bag, error) to process table

Why is this needed:
Avoids join process_state table to process. It helps Analytics.

• [] this issue need to update on docs? if yes where?
  Wherever the documents of database models are.

• [] this issue interact with a plugin or application? if yes spe
  No.

Anything else we need to know:
No

[gharamura]

this should not be dealt by the api.