Add relevant problem information

[pranjalg131]

Is your feature request related to a problem? Please describe.
Sometimes we need to refer back to the problem for which we wrote the solutions to go back and
read the problem statement
Additional info like the problem link, name, contest name are beneficial

Describe the solution you'd like

// Problem : Life, the Universe, and Everything
// Contest : CodeChef - DSA Learning Series - Contest 1
// URL : https://www.codechef.com/LRNDSA01/problems/TEST
// Memory Limit : 256 MB
// Time Limit : 10000 ms

Something like this is appreciated

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
Add any other context or screenshots about the feature request here.

[agrawal-d]

Now, the generated testcase file contains this information. However, the source code is untouched.