Adding another maintainer into CODEOWNERS file (#1382)

* Improve with providing Nuclear Norm Constraint

* Update based on feedback

* Update Based on Feedback

* Solve Conflict

* Solve Conflict

* change format and fix conflict

* Update CODEOWNERS with adding another maintainer

Update CODEOWNERS with adding lokande-vishnu as another maintainer of /tensorflow_addons/optimizers/conditional_gradient.py.

Co-authored-by: gabrieldemarmiesse <[email protected]>

Author: pkan2

.github/CODEOWNERS

@@ -77,7 +77,7 @@
 /tensorflow_addons/metrics/r_square*.py @ssaishruthi
 
 /tensorflow_addons/optimizers/average_wrapper*.py @squadrick
-/tensorflow_addons/optimizers/conditional_gradient*.py @pkan2
+/tensorflow_addons/optimizers/conditional_gradient*.py @pkan2 @lokhande-vishnu
 /tensorflow_addons/optimizers/cyclical_learning_rate*.py @raphaelmeudec
 /tensorflow_addons/optimizers/lamb*.py @junjiek
 /tensorflow_addons/optimizers/lazy_adam*.py @ssaishruthi