Create daily AAR snapshot (pytorch#10092)

Download daily snapshots like https://ossci-android.s3.amazonaws.com/executorch/release/snapshot-20250411/executorch.aar

Author: kirklandsign

.github/workflows/android-release-artifacts.yml

@@ -11,6 +11,8 @@ on:
         description: Upload the AAR to maven staging repository
         required: false
         type: boolean
+  schedule:
+    - cron: 0 10 * * *
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
@@ -26,6 +28,10 @@ jobs:
         shell: bash
         run: |
           VERSION="${{ inputs.version }}"
+          if [ -z "$VERSION" ]; then
+            echo "No version name specified. Will create a snapshot AAR"
+            exit 0
+          fi
           if curl -I "https://ossci-android.s3.amazonaws.com/executorch/release/${VERSION}/executorch.aar" | grep "200 OK"; then
             echo "AAR already exists at https://ossci-android.s3.amazonaws.com/executorch/release/${VERSION}/executorch.aar"
             echo "Will skip build/upload"
@@ -107,6 +113,8 @@ jobs:
           pip install awscli==1.32.18
           AWS_CMD="aws s3 cp"
           VERSION="${{ inputs.version }}"
-          VERSION_NAME="${VERSION:-temp_snapshot}"
-          ${AWS_CMD} executorch.aar s3://ossci-android/executorch/release/${VERSION_NAME}/executorch.aar --acl public-read
-          ${AWS_CMD} executorch.aar.sha256sums s3://ossci-android/executorch/release/${VERSION_NAME}/executorch.aar.sha256sums --acl public-read
+          if [ -z "$VERSION" ]; then
+            VERSION="snapshot-$(date +"%Y%m%d")"
+          fi
+          ${AWS_CMD} executorch.aar s3://ossci-android/executorch/release/${VERSION}/executorch.aar --acl public-read
+          ${AWS_CMD} executorch.aar.sha256sums s3://ossci-android/executorch/release/${VERSION}/executorch.aar.sha256sums --acl public-read