Fix go.mod module path to support go install

[Megatherium]

Hi,

Describe the bug
The module's path declaration prevents using go install

To Reproduce
Steps to reproduce the behavior:

> go install github.com/Han8931/gorae/cmd/gorae@latest
go: github.com/Han8931/gorae/cmd/gorae@latest: version constraints conflict:
        github.com/Han8931/gorae@v1.2.1: parsing go.mod:
        module declares its path as: gorae
                but was required as: github.com/Han8931/gorae

Fix
Could you please update the first line of go.mod to: module github.com/Han8931/gorae

And then run go mod tidy? This will allow users to install the tool directly without cloning the repo manually.

Thanks