feat: add contribution activity for last week/month/year

Closes #14
Revert "feat: add contribution activity for last week/month/year"

This reverts commit 4cf464f04a45f4495435bb4bc3ac7cb47c052e84.
Merge branch 'feat/contribution-activity' of https://github.com/beerpals/beerpals.github.io into feat/contribution-activity