Feature Adding Linear Datastructure Linked-List

[abhishekdumaniya]

I need to some add file of the Linked-List

[pa-kh039]

@tarunsinghofficial I will fix this issue in minutes. Please assign it to me!!

[Prakhar1701]

I want to work on this issue, please assign me this issue.

[prafull904434]

sir
can you assign to me