made the feature to rename csv

[FireFistisDead]

Fixes

Closes #126

Description

This pull request enhances the export functionality in src/utils/exportSchedule.ts by allowing users to specify a custom file name when saving schedules to their device. The changes focus on improving file naming flexibility and updating related functions to support this feature.

Export functionality improvements:

• The exportSelectedRegistersCSV method now accepts an optional customFileName parameter, enabling users to define the exported file's name.
• File naming logic is updated to prioritize the user-provided customFileName if available, otherwise falling back to the existing naming conventions for single or grouped exports.

API and usage updates:

• The saveToDevice method now accepts an optional customFileName argument and passes it through to the export logic, ensuring the custom name is used throughout the export process.
• Overwrite confirmation dialogs and logic are updated to respect the custom file name when overwriting existing files.
• A new utility function, saveScheduleToDeviceWithName, is added to the API, allowing callers to save schedules with a user-specified file name.

Files Changed

• src/utils/exportSchedule.ts

Screenshots/Videos

https://drive.google.com/file/d/18-gmsNigNIKtKPb9JFXUkp8cNFoPQLuZ/view?usp=sharing

GSSoC Contributor

• Yes, I am a GSSoC contributor

Testing Device

• Physical Android Device

[FireFistisDead]

@anisharma07 @Irtesaam I have made this changes

[Irtesaam]

@FireFistisDead
It is directly downloading without any prompt for renaming csv.

version: Android 11