Rename Go module to allow installing with go install

[ben-krieger]

Goal: Install rpc-go with go install github.com/open-amt-cloud-toolkit/rpc-go/v2/cmd/rpc@latest.

Steps taken:

• Modify module name in go.mod to github.com/open-amt-cloud-toolkit/rpc-go/v2 to reflect location and proper versioning (required by Go toolchain)
• Move contents of cmd to cmd/rpc for proper executable naming
• Update self-imports with find . -name '*.go' -exec sed -i 's|"rpc/|"github.com/open-amt-cloud-toolkit/rpc-go/v2/|' '{}' \;
• Fix import grouping with find . -name '*.go' -exec goimports -local github.com/open-amt-cloud-toolkit -w '{}' \;
• Ensure proper formatting with find . -name '*.go' -exec gofmt -s -w '{}' \;
• Update README and Makefile with new cmd/rpc path

[rsdmike]

This looks good -- I was able to get it to work in my own fork with go install github.com/rsdmike/rpc-go/v2/cmd/rpc@v2 . After giving it some thought, I'm thinking we can forego the breaking change indicator ! as that would make it v3 and be confusing when there really isn't a CLI/command change, but keep as a feat:. So if you could update that I'll go ahead and approve and we can tweak anything we need to if it doesn't work after its merged in. We'll likely need to make some changes in the documentation given the path change for cmd/rpc tho.