Upload custom ops framework.

Summary:
overriding_review_checks_triggers_an_audit_and_retroactive_review
Oncall Short Name: executorch

Differential Revision: D55579927

fbshipit-source-id: 66cbce50fd4fd98b3955ea14fe13b90a4285f467

Author: shoumikhin

.github/workflows/apple.yml

@@ -68,6 +68,7 @@ jobs:
         FRAMEWORKS=(
           "executorch"
           "coreml_backend"
+          "custom_backend"
           "mps_backend"
           "optimized_backend"
           "portable_backend"
@@ -91,7 +92,7 @@ jobs:
 
         # Build Release iOS Frameworks
         PYTHON_EXECUTABLE=python ${CONDA_RUN} --no-capture-output \
-        build/build_apple_frameworks.sh --coreml --mps --optimized --portable --quantized --xnnpack
+        build/build_apple_frameworks.sh --coreml --custom --mps --optimized --portable --quantized --xnnpack
 
         # Bundle Release iOS Frameworks
         for FRAMEWORK in "${FRAMEWORKS[@]}"; do (