Adding a newsletter section

[riyajaiswal25]

Adding a newsletter section, it can improve user experience. It can be used for adding the latest occurances in the science and tech field to stay updated.

[github-actions]

Hi 😄, @riyajaiswal25 Thanks for creating an issue at FunwithPhysics. We request you to follow the contributing guidelines.

[karantec]

please assign me this issue under gSCO 2023