add timeline settings to 3 dot menu

[breadguyyy]

Summary

allow editing the timeline tabs right from the homepage

Purpose

it just feels intuitive to have there

Do you want to implement this feature yourself?

• Yes, I will implement this by myself and send a pull request

[noridev]

Function implementation completed in 466a7e0. Thank you! 🙏

[breadguyyy]

also might be good to add the custom cherrypick mobile header option there too!