feat: add 7.x source code

cmd/gotenberg/main.go

@@ -0,0 +1,16 @@
+package main
+
+import (
+	gotenbergapp "github.com/gotenberg/gotenberg/v7/internal/app/gotenberg"
+
+	// Gotenberg modules.
+	_ "github.com/gotenberg/gotenberg/v7/pkg/standard"
+	// PDF engines.
+	_ "github.com/gotenberg/gotenberg/v7/pkg/modules/libreoffice/pdfengine"
+	_ "github.com/gotenberg/gotenberg/v7/pkg/modules/pdfcpu"
+	_ "github.com/gotenberg/gotenberg/v7/pkg/modules/pdftk"
+)
+
+func main() {
+	gotenbergapp.Run()
+}