json output config file

[thanasions]

Json needs to include:

absolute_path_pkl (of pickled file used as input),
absolute_path_tech_report (of tech_report.txt),
cpc
year_from,
year_to,
pick,
time,
cite,
focus

[IanGrimstead]

Created branch 47-json-config

[IanGrimstead]

Use case: -json will trigger output of a .json file alongside the report .txt file in outputs\reports
Report name is same for json (just different file extension)

[thanasions]

{
"paths": {
"data": "absolute_path",
"tech_report": "absolute_path"
},
"year": {
"from": "blah",
"to": "blah"
},
"parameters": {
"pick": "blah",
"time": false,
"cite": false,
"focus": false
}
}