[KIE-830] Make Kogito Operator build reproducible

[ricardozanini]

In this PR, we did:

1. Rename the module to apache/kie-incubator-kogito-operator to follow golang modules conventions.
2. Upgrade the build to golang 1.21
3. Make the build command to trimpaths, remove buildids, and force OS and Arch to be able to make the binaries reproducible.

TODO:

• - I still need to validate with diffoci to verify if it's producing semantically equal images.

[ricardozanini]

Adds to:

• Make Operators (SonataFlow/Kogito) and Kogito Images build reproducible incubator-kie-issues#830

[ricardozanini]

I might have to upgrade codegen for this go version:

./hack/client-gen.sh
go: module k8s.io/code-generator: not a known dependency
Failed to add k8s.io/code-generator to mod
make: *** [Makefile:130: generate] Error 1