Generic blocklist rule

[ccojocar]

Summary

Some imports are currently blocked-listed by hard-coding them in various blockedlist rules. https://github.com/securego/gosec/blob/36a82ea85e59163446547798563e24ee8d5a27c7/rules/blacklist.go#L50

https://github.com/securego/gosec/blob/36a82ea85e59163446547798563e24ee8d5a27c7/rules/rulelist.go#L90

I think that it would be nice to define a generic blocklist rule which is able to parse the blocklisted import paths from the rule config.

Steps to reproduce the behavior

gosec version

Go version (output of 'go version')

Operating system / Environment

Expected behavior

Actual behavior