feat: improve code extract to be consistent

[cfabianski]

Description

Code Extract is not consistent between CLI and Cloud because the CLI reads the lines from the file while the Cloud gets the info from the Source and Sink which may not be the entire line.
The new JSON field code_extract corrects that and makes it consistent

Also:

• Refactored the way we generate the omitted line and logic which were a little bit too complicated.
• Makes it easier to configure the buffer for line

Tested with HTML, JSON and Table outputs

Still ToDo:

• Requires a Cloud updates to start consuming this new field cc @gotbadger
• Update bearer-rules snapshots 🙈

Related

• Closes Inaccurate Ruby logger code snippets and line numbers bearer-rules#54

Checklist

• I've added test coverage that shows my fix or feature works as expected.
• I've updated or added documentation if required.
• I've included usage information in the description if CLI behavior was updated or added.
• PR title follows Conventional Commits format