feat: add remote config flag check for heavy/fallible tasks

[rutajdash]

Check a remote config flag for the functional status of the different tasks which may be long running, heavy or fallible due to third party dependencies, etc.
This will allow for easy gradual roll outs, time/region controlled access and also as a kill switch for major issues.

Edit:
Also, add auto kill-switch (condition based) for fallible tasks.