Create MAINTAINERS
Create MAINTAINERS

Since this project is based on ocitools and OCT, 
I propose to add Mrunal and me as the initial maintainers. 

Signed-off-by: 697032833b3f51bdf1566979568a5c27aaeb8821@huawei.
opencontainers/runtime-tools,hmeng-19/ocitools,liangchenye/ocitools,wking/ocitools-v2,hmeng-19/ocitools,opencontainers/ocitools,opencontainers/ocitools,liangchenye/ocitools,opencontainers/runtime-tools,wking/ocitools-v2