Separate output from querying

[edeckers]

Querying and output are very intertwined in the current setup, which makes the handling of queries to the agent API kind of awkward

huemon/src/huemon/api_server.py

Line 27 in 4a5ac7e

context_reader = io.StringIO()

• Wrap method results in eithers and options instead of calling sys.exit and printing
• Add processors that handle printing results