Add Persian language support to leaflet.draw.locales

[RezaBakhshiNia]

In this PR, I have added Persian language support to the leaflet.draw.locales package. This will enable users to utilize the package in Persian-speaking regions and enhance the localization capabilities of the library.

Changes Made:

Created a new file fa.ts in the locales directory Added translations for all the necessary strings in Persian Updated the index.js file to include the Persian language file Testing Done:

Tested the changes locally by setting the language to Persian and verifying the correctness of the translations Checked that the package functions as expected with the new Persian language support Contributor's Note: I am a native Persian speaker and have experience with localization and translation work. I have carefully reviewed and tested the changes to ensure accuracy and compatibility.

Please let me know if any further modifications or improvements are required. I'm open to feedback and eager to collaborate on incorporating Persian language support into the main repository.

Thank you for considering this contribution.