Maint: package local narrow Logger interfaces

internal/server/logger.go

@@ -0,0 +1,29 @@
+package server
+
+type Logger interface {
+	infoer
+	warner
+	errorer
+}
+
+type infoErrorer interface {
+	infoer
+	errorer
+}
+
+type infoWarner interface {
+	infoer
+	warner
+}
+
+type infoer interface {
+	Info(s string)
+}
+
+type warner interface {
+	Warn(s string)
+}
+
+type errorer interface {
+	Error(s string)
+}