Add codeowners for model bring-up

Author: RissyRan

.github/CODEOWNERS

@@ -1,4 +1,10 @@
-* @gobbleturk @khatwanimohit @bvandermoon @vipannalla @RissyRan @richjames0 @gagika @shralex @yangyuwei @SurbhiJainUSC @hengtaoguo @A9isha @aireenmei @NuojCheng @jiangjy1982
+* @gobbleturk @khatwanimohit @bvandermoon @vipannalla @RissyRan @richjames0 @gagika @shralex @SurbhiJainUSC @hengtaoguo @A9isha @aireenmei @NuojCheng @jiangjy1982 @suexu1025
+
+# Model bring-up
+src/MaxText/assets @michelle-yooh @parambole @rohan-bierneni @shuningjin @Obliviour @zxhe-sean @RissyRan @aireenmei @suexu1025 @jiangjy1982 @gobbleturk @bvandermoon @gagika @shralex @richjames0
+src/MaxText/configs/models @michelle-yooh @parambole @rohan-bierneni @shuningjin @Obliviour @zxhe-sean @RissyRan @aireenmei @suexu1025 @jiangjy1982 @gobbleturk @bvandermoon @gagika @shralex @richjames0
+src/MaxText/utils/ckpt_conversion @michelle-yooh @parambole @rohan-bierneni @shuningjin @Obliviour @zxhe-sean @RissyRan @aireenmei @suexu1025 @jiangjy1982 @gobbleturk @bvandermoon @gagika @shralex @richjames0
+src/MaxText/layers @michelle-yooh @parambole @rohan-bierneni @shuningjin @Obliviour @zxhe-sean @RissyRan @aireenmei @suexu1025 @jiangjy1982 @gobbleturk @khatwanimohit @bvandermoon @gagika @shralex @SurbhiJainUSC @hengtaoguo @A9isha @NuojCheng @richjames0
 
 # Features
 src/MaxText/experimental/rl @A9isha @khatwanimohit @gagika @richjames0
@@ -17,8 +23,8 @@ src/MaxText/inference @vipannalla @mitalisi @gpolovets1 @mailvijayasingh @jrplat
 src/MaxText/inference_mlperf @vipannalla @mitalisi @gpolovets1 @mailvijayasingh @jrplatin @patemotter @lumosis @richjames0
 
 # Dockerfiles and dependencies
-*.Dockerfile @bvandermoon @yangyuwei @parambole @richjames0
-*.txt @bvandermoon @yangyuwei @parambole @richjames0
+*.Dockerfile @bvandermoon @parambole @richjames0
+*.txt @bvandermoon @parambole @richjames0
 
 # Workflow files
 .github/workflows @gobbleturk @khatwanimohit @shralex @parambole @richjames0