[Feature Request]: Expand on the contributor guidelines for the new dependency approach

[elbatane]

Description

It would be really useful to have some guidelines about the syntax, rules, etc. we have to follow when updating a module. For instance, when we should create a parameter, a variable, or hardcode the value.

[AlexanderSehr]

Further examples

• Examples for purge-protected key vaults
• Examples for DNS Zones
• Naming conventions, etc. (ref #2038)
• ...