Add consensuswarn to CI pipeline

[crStiv]

Closes #833

Changes:

• Added consensuswarn to CI matrix
• Created consensuswarn target in Makefile
• Integrated consensuswarn into the linter suite

The tool will run as part of the standard CI checks to help maintain code quality and prevent consensus-related bugs early in development.

[rezbera]

https://github.com/orijtech/consensuswarn
Repo hasn't been updated in 6 months. Don't think we want to be adding unused and unmaintained tools. wdyt @abi87

[abi87]

https://github.com/orijtech/consensuswarn Repo hasn't been updated in 6 months. Don't think we want to be adding unused and unmaintained tools. wdyt @abi87

This is related to #833 which is marked goodFirstIssue so it's a fair attempt at contributing. I like the idea of the tool, but it's probably an overkill for us? We should discuss this.
Definitely this PR does not do all the job though: I believe we have to mark the proper functions to be warned about