Add desugar library

[shunm-999]

Is your feature request related to a problem? Please describe.
Currently, the library requires a relatively high minSdkVersion to work properly due to the usage of newer Java APIs. This prevents users who need to support older Android versions from using the library effectively.

Describe the solution you'd like
Enable desugaring in the library's build configuration to allow usage of newer Java APIs while maintaining compatibility with lower Android API levels. This would involve:

1. Adding desugaring support in the build.gradle file
2. Configuring the necessary desugaring options

Additional context
Desugaring is officially supported by Android Gradle Plugin and is a recommended approach for maintaining backward compatibility while using modern Java features. This change would allow more developers to use the library in their projects without worrying about API level restrictions.