Add govulncheck linter

[malt3]

This is a feature idea / request.
First of all: thank you so much for working on this!
Having cached / incremental linters for Bazel / Go would greatly improve the velocity of my team.
Especially if this can be done in CI.

I wonder if govulncheck could be adapted to be a nogo-analyzer.
Since govulncheck is very resource intensive, it would greatly benefit from nogo support.
I don't currently understand nogo or govulncheck well enough to understand fully if they could work together, so feel free to close this if it is not feasible.

[sluongng]

govulncheck is a complicated tool. It does not use the typical Analyzer framework and requires a constantly updated db of known vulnerabilities.

I have commented in golang/go#61494 (comment) wrt how it could be supported in the Bazel ecosystem. But if that ever happens, we would want a separate rule for it and not in nogo-analyzer.git repo.