feat: implemented service/transport/main layers

internal/pkg/log/log.go

@@ -0,0 +1,23 @@
+package log
+
+import (
+	"context"
+
+	"go.uber.org/zap"
+)
+
+type ctxLogKey struct{}
+
+func ToCtx(ctx context.Context, lg *zap.Logger) context.Context {
+	return context.WithValue(ctx, ctxLogKey{}, lg)
+}
+
+func Ctx(ctx context.Context) *zap.Logger {
+	lg, ok := ctx.Value(ctxLogKey{}).(*zap.Logger)
+	if !ok || lg == nil {
+		zap.L().Error("no logger in context, using global")
+		return zap.L()
+	}
+
+	return lg
+}