Update module path and import statements to reflect new repository structure

- Changed module name in go.mod from `subenum` to `github.com/TMHSDigital/subenum`.
- Updated import paths in main.go to use the new module path for internal packages.

Author: TMHSDigital

go.mod

@@ -1,3 +1,3 @@
-module subenum
+module github.com/TMHSDigital/subenum
 
 go 1.22 

main.go

@@ -34,9 +34,9 @@ import (
 	"syscall"
 	"time"
 
-	"subenum/internal/dns"
-	"subenum/internal/output"
-	"subenum/internal/wordlist"
+	"github.com/TMHSDigital/subenum/internal/dns"
+	"github.com/TMHSDigital/subenum/internal/output"
+	"github.com/TMHSDigital/subenum/internal/wordlist"
 )
 
 const (