Adding a tutorial on CyclicalLearningRate (#2463)

* Adding initial notebook

* Delete optimizers_cyclicallearningrate.ipynb

* adding initial notebook

* Update _toc.yaml

* formatted with nbfmt

* second person

* Format Notebook

* feedback round I

* Linter fix

Reference: https://github.com/tensorflow/addons/pull/2463/checks?check_run_id=2748644668#step:5:23

Co-authored-by: Sean Morgan <[email protected]>

Author: sayakpaul

docs/tutorials/_toc.yaml

@@ -14,11 +14,13 @@ toc:
   path: /addons/tutorials/optimizers_lazyadam
 - title: ConditionalGradient Optimizer
   path: /addons/tutorials/optimizers_conditionalgradient
+- title: CyclicalLearningRate Schedule
+  path: /addons/tutorials/optimizers_cyclicallearningrate
 - title: TQDM Progress Bar
   path: /addons/tutorials/tqdm_progress_bar
 - title: Seq2Seq for Translation
   path: /addons/tutorials/networks_seq2seq_nmt
 - title: Moving Average Optimizer Checkpoint
   path: /addons/tutorials/average_optimizers_callback
 - title: Time Stopping Callback
-  path: /addons/tutorials/time_stopping
+  path: /addons/tutorials/time_stopping