Need of flexible loss function GeneralLoss which can change behavior based on params

[ashutosh1919]

Describe the feature and the current behavior/state.
Need of flexible loss function GeneralLoss which can change behavior based on params alpha and scale. Please take a look at this paper.

Relevant information

• Are you willing to contribute it (yes/no): yes
• Are you willing to maintain it going forward? (yes/no): yes
• Is there a relevant academic paper? (if so, where): yes
• Is there already an implementation in another framework? (if so, where): google research
• Was it part of tf.contrib? (if so, where): no

Which API type would this fall under (layer, metric, optimizer, etc.)
loss

[seanpmorgan]

TensorFlow Addons is transitioning to a minimal maintenance and release mode. New features will not be added to this repository. For more information, please see our public messaging on this decision:
TensorFlow Addons Wind Down

Please consider sending feature requests / contributions to other repositories in the TF community with a similar charters to TFA:
Keras
Keras-CV
Keras-NLP