Add Fluent-bit Support for reporting

[pcarinhas]

Important notices

Before you add a new report, we ask you kindly to acknowledge the following:

• [ *] I have read the contributing guide lines at https://github.com/opnsense/core/blob/master/CONTRIBUTING.md
• [ *] I am convinced that my issue is new after having checked both open and closed issues at https://github.com/opnsense/core/issues?q=is%3Aissue

Is your feature request related to a problem? Please describe.
Monitoring opnsense with Loki is challenging because you have to go through several tools like
telegraf + Promtail => Loki. With Fluent-bit, they have plugins for many monitoring systems including
Loki, DataDog, LogDNA, Syslog, and many more.

Describe the solution you like

A simple Fluent-bit package that once installed, provides (inputs, outputs, filters) that you can setup easily.

Describe alternatives you considered

Telegraf (has no Loki setup), syslog (not secure, requires other services like Promtail),

Additional context
Fluent-bit is very light-weight, and adaptable. Its used extensively in the K8s world.
Fluent-bit can possibly replace several other plugins.