Add metadata structure to fluent-bit go loki plugin

[jcdauchy-moodys]

I am still using the "go version" of fluent-bit plugin as it is the only one (at least 8 months ago) that was handling string with double quote log correctly.

Do you plan to add the handling of "metadata structure" which is about the same as "labels" in the plugin ?

Thanks in advance.

PS: I have seen that the official loki plugin in C now handle the "metadata structure".

[JStickler]

There are two FluentBit plugins for Loki. The one that is maintained by FluentBit already has support for structured metadata.

https://grafana.com/docs/loki/latest/send-data/fluentbit/