feat(signatures): expose signatures helpers as Go module

[AlonZivony]

1. Explain what the PR does

To allow users the option to use the up-to-date helpers for Go signatures, the helpers were exported to be an external Go module.

f9a60e590 feat(signatures): expose signatures helpers as Go module

2. Explain how to test it

3. Other comments

[AlonZivony]

This will require a follow-up PR to remove the replace in the go.mod file.

[yanivagman]

Please see my comment #3705 (comment)

[AlonZivony]

Using signatures as an .so or built in is not so important to determine what to do here in my opinion.
If we import the Tracee module, we need to have sophisticated make file to run unit tests because of the cgo and all.
It is very inconvenient to work with Tracee as a dependency, and also inaccurate because Tracee use the signatures, and not vice-versa.
So dividing the helpers from Tracee to allow more healthy dependencies is the best approach regardless of the way the signatures will be integrated into the Tracee in the end

[NDStrahilevitz]

FWIW, i'm +1 for this change.

[yanivagman]

LGTM

[yanivagman]

Please replace this after merged

[yanivagman]

LGTM