1. 현재 디렉토리에 들어가서 실행한다.go mod init
PS E:\projects\goland_learning\src\gin_demo> go mod init
go: creating new go.mod: module gin_demo
go: to add module requirements and sums:
go mod tidy
2. 타사 패키지를 다운로드합니다.
PS E:\projects\goland_learning\src\gin_demo> go get -u github.com/gin-gonic/gin
go: downloading github.com/gin-gonic/gin v1.9.1
go: downloading golang.org/x/net v0.10.0
go: downloading github.com/ma