Add option to specify organization members on a timeframe

[quic-mathbern]

Say we have a developer named John who have contributed to a project under the foo organization using both john@foo.com and john@doe.com. One could write the ctracker config file for this use case as:

org_files:
  foo: foo-systems foo 

org_domains:
  foo: foo.com john@doe.com

But what if John has also used the john@doe.com email when he was a member of the bar organization? It would be nice if we could define a time period in which a particular domain is associated with each organization, so that John's email can correctly be counted in either foo or bar orgs considering the timestamp of the commits.

(May relate to #5 )

[github-actions]

This issue is stale. Add a nice message, can mention maintainers or maintainer team to draw attention