feat: support swap and zram configurations

[dkeven]

the following command line options are added to the olares-cli olares install command:

      --enable-pod-swap          Enable pods on Kubernetes cluster to use swap, setting --enable-zram, --zram-size or --zram-swap-priority implicitly enables this option, regardless of the command line args, note that only pods of the BestEffort QOS group can use swap due to K8s design
      --enable-zram              Set up a ZRAM device to be used for swap, setting --zram-size or --zram-swap-priority implicitly enables this option, regardless of the command line args
      --swappiness int           Configure the Linux swappiness value, if not set, the current configuration is remained
      --zram-size string         Set the size of the ZRAM device, takes a format of https://kubernetes.io/docs/reference/kubernetes-api/common-definitions/quantity, defaults to half of the total RAM
      --zram-swap-priority int   Set the swap priority of the ZRAM device, between -1 and 32767, defaults to 100

note that the https://github.com/systemd/zram-generator from systemd is not used because its configuration and dependencies are incompatible across different linux distros and does not support some configuration options that we need