ENT-8096: Implemented policy profiler in cf-agent

[victormlg]

Example policy:

bundle agent main
{
  commands:
    "/bin/sleep 1";
}

To generate the profiling tree, run:
sudo /var/cfengine/bin/cf-agent -Kpf ~/profiler5.cf

{
      "events": [
        {
          "elapsed": 1004137457,
          "filename": "/home/vagrant/profiler5.cf",
          "id": "promise_commands_/home/vagrant/profiler5.cf_67_4",
          "name": "commands",
          "offset": {
            "context": 0,
            "end": 0,
            "line": 4,
            "start": 67
          },
          "type": "promise"
        },
        {
          "elapsed": 1004677573,
          "filename": "/home/vagrant/profiler5.cf",
          "id": "bundle_main_/home/vagrant/profiler5.cf_13_1",
          "name": "main",
          "offset": {
            "context": 0,
            "end": 85,
            "line": 1,
            "start": 13
          },
          "type": "bundle"
        }
      ],
      "policy": {
        "bodies": [],
        "bundles": [
          {
            "arguments": [],
            "bundleType": "agent",
            "line": 1,
            "name": "main",
            "namespace": "default",
            "promiseTypes": [
              {
                "contexts": [
                  {
                    "name": "any",
                    "promises": [
                      {
                        "attributes": [],
                        "line": 4,
                        "promiser": "/bin/sleep 1"
                      }
                    ]
                  }
                ],
                "line": 3,
                "name": "commands"
              }
            ],
            "sourcePath": "/home/vagrant/profiler5.cf"
          }
        ]
      }
    }

[victormlg]

I still need to add functions execution in the profiler

edit: this is done

[github-advanced-security]

CodeQL found more than 20 potential problems in the proposed changes. Check the Files changed tab for more details.

[larsewi]

Some smaller comments

[olehermanse]

@victormlg I think this part (pushing an event into the Seq) is the only thing we want to do while evaluating policy. The rest (building a nice tree, hashmaps, summarizing, sorting, etc. Should all appen by iterating over the events after policy evaluation is done.

[olehermanse]

Here we should loop over the "unprocessed" events in the Seq, and convert them to the proper tree.