Add support of the MicroVM machine type of StratoVirt hypervisor for the kata go runtime, with configuration toml, build support and test. This is a backport from kata-containers v3.3.0 release. Signed-off-by: Liu Wenyuan <liuwenyuan9@huawei.com> (cherry picked from commit f686c0ec5db954b201b2a524f2cf807fa0c26860)