feat(notifications): add chore to clean old notifications

[e-aakash]

Todo before merge:

• [x] Log the count to some persistent space to track previously sent notifs

[codecov[bot]]

Codecov Report

Merging #442 (7d18d82) into master (77e4208) will not change coverage. The diff coverage is n/a.

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##            master      #442   +/-   ##
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  Coverage   100.00%   100.00%           
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  Files          113       113           
  Lines         4359      4359           
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  Hits          4359      4359           

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[e-aakash]

Added a required 'path' argument to dump old notifications in the command as JSON.