Paddle-Lite Continuous Integration scripts:

• ci_android_publish.sh: checking publish period on android platform.
• ci_ios_publish.sh: checking publish period on iOS platform.
• ci_ios_metal_publish.sh: checking publish period on iOS platform with Apple Metal support.
• ci_mac_publish.sh: checking publish period on x86 mac platform.
• ci_android_unit_test.sh: checking unit tests on android backend.
• ci_android_opencl_unit_test.sh: checking unit tests on opencl android backend.
• ci_android_install.sh: compile the stripped lib and test its usability.
• ci_benchmark.sh: compile benchmark binary for Android(arm, opencl), Linux(x86, arm) and run test.