[ADDED] Text number formatter for 2 decimal formatting.

[hossain-khan]

Added tests as well.

The unit mess is getting out of hands - #60

This pull request introduces a new utility function formatUnit for formatting numerical values with their respective units, and refactors existing code to use this new function. Additionally, it includes tests for the new utility function to ensure its correctness.

Refactoring and Utility Function Addition:

• app/src/main/java/dev/hossain/weatheralert/util/TextFormatter.kt: Added formatUnit function to format float and double values with their units.
• app/src/main/java/dev/hossain/weatheralert/notification/Notification.kt: Refactored the triggerNotification method to use the new formatUnit function for consistent formatting of weather alert values. [1] [2]
• app/src/main/java/dev/hossain/weatheralert/ui/alertslist/CurrentAlertScreen.kt: Updated the CurrentWeatherAlertPresenter class to use the formatUnit function for formatting threshold and current status values.

Testing:

• app/src/test/java/dev/hossain/weatheralert/util/TextFormatterTest.kt: Added unit tests for the formatUnit function to verify its behavior with various input values, including positive, negative, zero, and large numbers.

Minor Changes:

• app/src/main/java/dev/hossain/weatheralert/ui/alertslist/CurrentAlertScreen.kt: Modified CurrentWeatherAlertsPreview to update the sample alert note for better clarity.
• Updated import statements in Notification.kt and CurrentAlertScreen.kt to include the new formatUnit utility function. [1] [2]

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• app/src/main/java/dev/hossain/weatheralert/notification/Notification.kt: Language not supported
• app/src/main/java/dev/hossain/weatheralert/ui/alertslist/CurrentAlertScreen.kt: Language not supported
• app/src/main/java/dev/hossain/weatheralert/util/TextFormatter.kt: Language not supported
• app/src/test/java/dev/hossain/weatheralert/util/TextFormatterTest.kt: Language not supported