hcl/scanner: add test for negative number
hcl/scanner: add test for negative number

hashicorp/hcl,strivecast/hcl,hashicorp/hcl,hashicorp/hcl,hashicorp/hcl,strivecast/hcl,strivecast/hcl,strivecast/hcl,hashicorp/hcl,strivecast/hcl,KONTRAKT-DLL/hcl