Add example of how use exporter

[pleshakov]

• Code example using exporter
• How-to guide

[pleshakov]

@shaun-nx what do you think about writing it as go doc? for example, like overview and examples of errors package -- https://pkg.go.dev/errors@go1.22.4

[jjngx]

+1 for go.doc format - ref It would render nicely here.

[pleshakov]

@shaun-nx are you still working on it?