Created a function which returns codefoeces contest submissions

[Suryanshomar7240]

Pull Request Template

Description

Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. Fixes # (issue)

List any dependencies that are required for this change If you have installed any extra python library, do mention here.

Type of change

Please delete options that are not relevant.

• New feature (non-breaking change which adds functionality)
• This change requires a documentation update

Provide all the new routes

Please write all the new routes/ endpoints you have formed and describe what the purpose of them with proper documentation and example.

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration.

For testing I used Django tests and then used that testingURL(/codeforces/testing) to print the test cases.

Checklist:

• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] My changes generate no new warnings
• [x] I have checked my code and corrected any misspellings

[ShivamSinghal1]

First this is not expected. Second not to make PR directly to master. First push all your changes to a branch and then make a merge PR for master.