GODT-1816: Connect Gluon Logs to bridge Logs

Ensure the IMAP commands and SMTP commands are logged to trace channels
with an entry so they are recognizable as before.

internal/logging/imap_logger.go

@@ -0,0 +1,16 @@
+package logging
+
+import "github.com/sirupsen/logrus"
+
+// IMAPLogger implements the writer interface for Gluon IMAP logs
+type IMAPLogger struct {
+	l *logrus.Entry
+}
+
+func NewIMAPLogger() *IMAPLogger {
+	return &IMAPLogger{l: logrus.WithField("pkg", "IMAP")}
+}
+
+func (l *IMAPLogger) Write(p []byte) (n int, err error) {
+	return l.l.WriterLevel(logrus.TraceLevel).Write(p)
+}