feat(action): Add outputs after uploading build

[gokhanamal]

Summary

• Expose 5 new action outputs after a successful Firebase App Distribution upload: FIREBASE_CONSOLE_URI, TESTING_URI, BINARY_DOWNLOAD_URI, DISPLAY_VERSION, and BUILD_VERSION
• Capture Firebase CLI output using --json flag and parse with jq to extract release metadata
• Add jq dependency to the Docker image

Test plan

• Run the action with a valid build and verify all 5 outputs are populated
• Verify the action still fails correctly on upload errors (exit code preserved)
• Verify --debug flag still works alongside the new --json flag
• Confirm outputs are accessible in downstream workflow steps via ${{ steps.<id>.outputs.<name> }}