[Bro] Best way to contribute to existing analyzer

[Valerio]

Hi all,

I'd like to ask guidance on how to contribute to BRO by proposing
extensions to existing protocol analyzers.
For instance, suppose that I realize a patch to the DHCP analyzer that
includes new unsupported options. Such patch would impact on multiple
files like those in src/analyzer/protocol/dhcp,
scripts/base/protocols/dhcp as well as new types to be included in
init-bare.bro.

What would be the best procedure (and format) to submit such a patch?

best,
Valerio