there is missing of this algorithm, Please assign it to me, i can implement it......

Hi I want to Add Implementation of stack using linked list which consists of functions like push,pop,peek using c language ,could you please assign me this issue?

color for app.txt

i want to add the code of knap sack problem in c++ under hactoberfest2022

Is your feature request related to a problem? Please describe.
This repo does not contain a Pull Request template.

Describe the solution you'd like
I would like to add a Pull request template so that if someone wants to raise a pr they can select the right template and contribute.

Describe alternatives you've considered
NA

Additional context
I want to contribute to this repo for Hactoberfest21. Kindly assign this issue to me!