Add 2e manifest for A11 (r)

<?xml version="1.0" encoding="UTF-8"?>

<manifest>

  <project name="e/devices/android_device_teracube_emerald" path="device/teracube/emerald" remote="e" revision="v1-r" />

  <project name="e/devices/android_kernel_teracube_emerald" path="kernel/teracube/emerald" remote="e" revision="v1-r" />

  <project name="e/devices/platform_device_mediatek_sepolicy" path="device/mediatek/sepolicy" remote="e" revision="v1-r" />

</manifest>