feat: Add container top support

[coderbirju]

Issue #, if available:

This PR adds Support for Container top API - The API lists the running processes inside a container

• needs fix: Pass ps_args as option to container top containerd/nerdctl#4063 (merged)
• unit and e2e tests added

Description of changes:

• adds a new API (GET) container/top

Output format

{
  "Processes": [
    [
      "root",
      "25508",
      "25472",
      "0",
      "18:55",
      "?",
      "00:00:00",
      "sleep Infinity"
    ]
  ],
  "Titles": [
    "UID",
    "PID",
    "PPID",
    "C",
    "STIME",
    "TTY",
    "TIME",
    "CMD"
  ]
}

• I've reviewed the guidance in CONTRIBUTING.md

License Acceptance

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.