[CI] Code linting

[TheElan]

Add plugin(s) which perform static analysis and include them in CI step along with action which will pinpoint lines in question. (E.g. stream not closed, infinite loop, etc)

[bombcar]

Can a json validator be added to the quest json before merge? Is that a thing?

[TheElan]

Can a json validator be added to the quest json before merge? Is that a thing?

yes, there are tools for that, e.g. in python or as gradle plugins, which can be relatively easy included in CI.