Convert test-activity calendar to solidjs

[fehmer]

• convert the test-activity-calendar from a class to simple object + functions for it to be stored in a solid store directly
• convert the test-acticity to a solidjs component
• use the new component on the user profile

[ShivamThareja]

Hi Fehmer
is this is task open to contribute for now, if not taken by anyone then, i would be happy to contribute

[iamclickify]

Hey @fehmer I did like to work on this issue can you please assign it to me?

[AmanxMishraDev]

Hi @fehmer, I'd like to work on this task. Since there have already been a couple of people expressing interest, could you let me know if it's still available to pick up? If so, I'd be happy to take it and submit a PR.

[ashishgit4]

hii @fehmer I’d like to work on this issue. Could you please assign it to me?

I’ll handle converting the test-activity-calendar to an object + functions, converting test-activity to a SolidJS component, and updating the user profile to use the new component.

Thanks!
ashishh.in