Export ExitStatus init func

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

process.go

@@ -52,6 +52,15 @@ type Process interface {
 	Status(context.Context) (Status, error)
 }
 
+// NewExitStatus populates an ExitStatus
+func NewExitStatus(code uint32, t time.Time, err error) *ExitStatus {
+	return &ExitStatus{
+		code:     code,
+		exitedAt: t,
+		err:      err,
+	}
+}
+
 // ExitStatus encapsulates a process' exit status.
 // It is used by `Wait()` to return either a process exit code or an error
 type ExitStatus struct {