feat: add offline network indicator and popup on download screen (#651)

[prince-0408]

Related Issue

Closes #651

Description

This PR addresses the issue where interacting with download actions while offline would fail silently. It introduces a proactive network check to ensure users receive clear feedback if they try to download or update data without an active internet connection.

Changes Included:

• NetworkMonitor.kt: Added a new utility to observe and verify the device's internet connection status using Android's ConnectivityManager.
• DataDownloadViewModel.kt & ConjugateDataDownloadViewModel.kt: Intercepted download and update events to verify network availability before proceeding.
• UI Feedback: Integrated a popup/Snackbar to display the message "No internet connection. Please connect and try again." if the user is offline.
• App.kt: Initialized or hooked up any necessary application-level network monitoring dependencies.

Screenshots

Offline Warning Popup	Network Connected

[github-actions]

Thank you for the pull request! 💙🩵

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[github-actions]

Maintainer Checklist

The following is a checklist for maintainers to make sure this process goes as well as possible. Feel free to address the points below yourself in further commits if you realize that actions are needed :)

• Tests for changes have been written and the unit test, linting and formatting workflows within the PR checks do not indicate new errors in the files changed

  • Tests may need to be reran as they're at times not deterministic

• The CHANGELOG has been updated with a description of the changes for the upcoming release and the corresponding issue (if necessary)

[andrewtavis]

Thanks for the issue and the PR, @prince-0408 :) Could you fix the Ktlint and Detekt issues?

[prince-0408]

Thanks for the issue and the PR, @prince-0408 :) Could you fix the Ktlint and Detekt issues?

Done
@andrewtavis

[andrewtavis]

Feel free to merge this once the tests pass, @angrezichatterbox :)

Thanks for your efforts here, @prince-0408!

[andrewtavis]

note: We're reverting the clipboard key setting given a new direction for the UI that we'll be doing in #655 :)

[andrewtavis]

praise: All's working really well here, @prince-0408! Really great to have this in, which also helped us close the Scribe-i18n issue for the Scribe-Server strings 😊