[FEATURE] Focus session or individual focus sprints should support attaching a tag to the session

[keshri-prasanjeet]

Just like in popular productivity app like forest, you could attach tag to the focus session to track how much time one dedicated to a specific task and then can find stats related to that tag.

Eg: 120 minutes focus today. Out of which 60 mins were doing math and remaining 60 were personal projects. Fine grained tracking would allow users to see stats based on tags on weekly/monthly/yearly basis and then compare between these time periods just like how in android digital wellbeing it compares the screen time and tells users that they used their phone x mins/hours more than previous week.

We should also be able to set monthly/weekly goals to focus x amount of time to y goal. After attaching tags to focus sessions the app should automatically track how much progression has been made to that goal.

[nsh07]

This feature can be added as a complement of #86, where each set has an associated tag and color. The stats can then be associated with each tag. Thanks for the request, and for using this app!