Change contest file naming

[nathy-cpu]

I have added a helper function in the Filesystem:save function to handle naming filenames of contest question. After this change, all the files created will be named like A_Problem_Name instead of AProblemName. I think this will be more readable and easier to arrange and archive the solution files for future use.

Checklist before requesting a review

• I have performed a self-review of my code.
• If it is a core feature, I have added thorough tests.
• I have run and passed all predefined tests.

[A7Lavinraj]

Nice work! Just give me some time to validate it so that nothing gets break

[A7Lavinraj]

@nathy-cpu looks like you forget about an edge case in to_snake_case. This converts ABC to A_B_C which is not expected. It means to_snake_case does not handling repeated upper case letters correctly. So please take this edge case in to account and try again!

Your output for ABC should be ABC

[nathy-cpu]

@nathy-cpu looks like you forget about an edge case in to_snake_case. This converts ABC to A_B_C which is not expected. It means to_snake_case does not handling repeated upper case letters correctly. So please take this edge case in to account and try again!

Your output for ABC should be ABC

I have fixed the issue and tried to handle more edge cases as well. This time I hope things go as expected.

[A7Lavinraj]

Looks like your changes have some formatting issues. You can use Makefile to fix that just use make fmt and it will fix the formatting, also if want a full check then use make all.

[nathy-cpu]

Oh my bad. It is fixed now

[A7Lavinraj]

Congratulations, but next time try to write your commit messages according to conventional commits rules. This time i doing a squash merge

[nathy-cpu]

Understood. This is my first pull request ever, so thank you for understanding :)