Go and Alpine updates

[Galorhallen]

Hello!

• Update Go version to 1.19 and alpine to 3.16
• Remove Gopkg in favor of go mod
• Add a basic pre-commit file

[paulrutter]

@josegonzalez is there any traction to get this project up to date again with recent libraries?

https://github.com/gliderlabs/registrator/issues/709#issue-1725942616 seems a more active fork?

[josegonzalez]

I can add folks from the more popular forks as contributors to this repository.