Added Hindi Lang

[Sachins0]

Description

On changing language to Hindi everything will be translated into Hindi language. I have used react redux here to change the language

Resolves: [#192]

Screenshots

https://github.com/hereisSwapnil/ExamTime/assets/149316445/f0011dd3-c966-466d-8308-f9ca4df48626

Additional Notes/Comments

@hereisSwapnil

If it is possible please mark it as level3 as I have invested a lot of time and work into it.

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