Add a new exporter type: DirectFLP

[jotak]

Description

DirectFLP starts the whole flowlogs-pipeline process directly from the Agent, eliminating the need for a network connection between them.

This can be useful when both Agent and FLP run on the same host, saving resources. This is mutually exclusive with other exporters such as with Kafka.

Dependencies

https://github.com/netobserv/flowlogs-pipeline/pull/538

(hold until this is merged => replace directive to remove)

Checklist

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• QE requirements (check 1 from the list):
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[codecov[bot]]

Codecov Report

Attention: 17 lines in your changes are missing coverage. Please review.

Comparison is base (a5378d6) 31.83% compared to head (fa1002c) 33.38%.

Files	Patch %	Lines
pkg/agent/agent.go	0.00%	8 Missing :warning:
pkg/exporter/direct_flp.go	73.91%	4 Missing and 2 partials :warning:
pkg/exporter/convert_flp.go	95.08%	2 Missing and 1 partial :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #223 +/- ## ========================================== + Coverage 31.83% 33.38% +1.55% ========================================== Files 37 39 +2 Lines 3371 3463 +92 ========================================== + Hits 1073 1156 +83 - Misses 2234 2241 +7 - Partials 64 66 +2 ``` | [Flag](https://app.codecov.io/gh/netobserv/netobserv-ebpf-agent/pull/223/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=netobserv) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/netobserv/netobserv-ebpf-agent/pull/223/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=netobserv) | `33.38% <83.96%> (+1.55%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=netobserv#carryforward-flags-in-the-pull-request-comment) to find out more.

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[msherif1234]

/lgtm

[jotak]

/unhold

[msherif1234]

/lgtm

[jotak]

thanks @msherif1234 ! /approve

[openshift-ci[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: jotak

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