feat: add memory.min param

[sergelogvinov]

It helps to configure memory.min cgroup param to make hard memory protection to the process group.

memory.min exists on documentation https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v2.html

[Zyqsempai]

@sergelogvinov Please add full support for this parameter including tests.

cgroups/v2/utils.go

Line 179 in 4ff5113

if mem := spec.Memory; mem != nil {

cgroups/v2/manager.go

Line 452 in 2b95ef0

if len(memoryEvents) > 0 {

cgroups/v2/memoryv2_test.go

Line 54 in ca6254f

func TestSystemdCgroupMemoryController(t *testing.T) {

[sergelogvinov]

Thank you. I've add the test.

memory.events does not have min event...
crun memory controller cannot set hard memory reservation only soft (memory.low)

[kzys]

LGTM

[sergelogvinov]

Rebase and resolve conflicts

[estesp]

LGTM