feat: add flag to disable to the memory swappiness

[soyji]

Hi, this is jiahaojz-onum smurf account, this issue closes #1060

I am running podman with crun and cgroupv2, default in systems like redhat

┌💁  jiahao-ji-zhou @ 💻  jiahao-ji-zhou-ThinkPad-E14-Gen-5 in 📁  watchtower on 🌿  feat/podman-compatibility → origin ⌀3 ✗
└❯ podman info | grep -i runtime -A3
  ociRuntime:
    name: crun
    package: crun_1.14.1-1_amd64
    path: /usr/bin/crun

┌💁  jiahao-ji-zhou @ 💻  jiahao-ji-zhou-ThinkPad-E14-Gen-5 in 📁  watchtower on 🌿  feat/podman-compatibility → origin ⌀3 ✗
└❯ podman info | grep cgroupVersion
  cgroupVersion: v2

The tests performed are for checking that watchtower works with podman. Those are executions with the flag:

Then the tests performed without the flag (the normal behaviour):

[github-actions]

Congratulations on opening your first pull request! We'll get back to you as soon as possible. In the meantime, please make sure you've updated the documentation to reflect your changes and have added test automation as needed. Thanks! 🙏🏼