Ac 3 new feat. marks submission, improved attendance and grading scheme

[Daksh119]

Issue that this pull request solves

Closes: # (issue number)

Proposed changes

Brief description of what is fixed or changed

Marks for individual type of evaluation can be submittted, Attendance with numbers, error handling

Types of changes

Put an x in the boxes that apply

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Other (please describe):

Checklist

Put an x in the boxes that apply

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have created new branch for this pull request
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• My changes does not break the current system and it passes all the current test cases.

Screenshots

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Other information

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[Daksh119]

@prabhatsuman

[Daksh119]

@prajjwalkapoor

[Daksh119]

@ChaudharyRaman

[ChaudharyRaman]

@prabhatsuman PTAL!!

[ChaudharyRaman]

@varun7singh PTAL!!

[VarunGitGood]

@Daksh119 have you pulled the latest changes from latest_staging branch??

[Daksh119]

@varun7singh no...but there shouldn't be any conflicts according to me or if you want I can raise a pr for latest_staging directly

[VarunGitGood]

please do pull from latest_staging before making the PR

[VarunGitGood]

Once done ping me i'll merge

[Daksh119]

created a new pr