feat(ui): Add Marathi Translation Support i18n

[Raj-G07]

Description:

Nixopus currently supports the following languages: English, French, Kannada, Spanish, Malayalam. However, Marathi, one of the major languages spoken in India, is not yet supported.

Expectation:

• Add Marathi translations for all existing UI strings, messages, and documentation sections covered under i18n.
• Add i18n resource file mr.json.
• For keys refer to latest en.json
• You can refer to Kannada i18n implementation for understanding the scope.

---

Note: Please ensure that the translations are natural and commonly used among Marathi speakers.

[linear]

NIX-166

[PratikRai0101]

Hey I would like to work on this
Could you assign this issue to me

[zhravan]

@PratikRai0101 : Assigning this to you.
You can join discord community for any discussion and if guidance is required.

⭐ the repo if you haven't already.

[ashwintemkar]

If for @PratikRai0101 it is taking time then, I would like to take this up
I have already worked on odia and made sure conversions to native languages are correct hence I would like to work for Marathi too, please Assign me this issue