Use using declarations instead of typedef

PR #19458.

.clang-tidy

@@ -35,7 +35,6 @@ Checks: >
   -modernize-use-auto,
   -modernize-use-nodiscard,
   -modernize-use-trailing-return-type,
-  -modernize-use-using,
   -readability-function-cognitive-complexity,
   -readability-function-size,
   -readability-identifier-length,

CODING_GUIDELINES.md

@@ -276,7 +276,7 @@ struct StructName {};
 
 enum EnumName {};
 
-typedef QList<ClassName> SomeList;
+using SomeList = QList<ClassName>;
 
 namespace NamespaceName
 {

src/base/bittorrent/speedmonitor.h

@@ -64,8 +64,8 @@ struct Sample
     T upload {};
 };
 
-typedef Sample<qlonglong> SpeedSample;
+using SpeedSample = Sample<qlonglong>;
-typedef Sample<qreal> SpeedSampleAvg;
+using SpeedSampleAvg = Sample<qreal>;
 
 class SpeedMonitor
 {

src/base/types.h

@@ -40,4 +40,4 @@ enum class ShutdownDialogAction
     Hibernate
 };
 
-typedef QMap<QString, QString> QStringMap;
+using QStringMap = QMap<QString, QString>;