move experimental folder to src/maxtext

Author: khatwanimohit

.github/CODEOWNERS

@@ -7,7 +7,7 @@ src/MaxText/utils/ckpt_conversion @parambole @shuningjin @RissyRan @suexu1025 @j
 src/MaxText/layers @parambole @shuningjin @RissyRan @suexu1025 @jiangjy1982 @gobbleturk @bvandermoon @gagika @shralex @richjames0 @NicoGrande @suexu1025 @jesselu-google
 
 # Features
-src/MaxText/experimental/rl @A9isha @khatwanimohit @xuefgu @gagika @richjames0 @shralex @NicoGrande
+src/maxtext/experimental/rl @A9isha @khatwanimohit @xuefgu @gagika @richjames0 @shralex @NicoGrande
 src/MaxText/input_pipeline @aireenmei @SurbhiJainUSC @richjames0 @shralex @NicoGrande
 src/MaxText/kernels/megablox @RissyRan @michelle-yooh @gagika @richjames0 @shralex @suexu1025 @jesselu-google
 src/MaxText/kernels/ragged_attention.py @patemotter @vipannalla @richjames0 @shralex

.gitignore

@@ -76,7 +76,6 @@ instance/
 # Sphinx documentation
 docs/_build/
 
-# src/MaxText/experimental/agent/integrative_rag_agent
 *.db
 
 # PyBuilder

codecov.yml

@@ -35,7 +35,7 @@ ignore:
   - "src/maxtext/assets"
   - "src/maxtext/configs"
   - "src/maxtext/examples"
-  - "src/MaxText/experimental"
+  - "src/maxtext/experimental"
   - "src/maxtext/inference"
   - "src/maxtext/scratch_code"
   - "src/MaxText/distillation" # code moved to src/maxtext/trainers/post_train/distillation