feat: add logc package, support AddGlobalFields for both logc and logx. (#2463)

* feat: add logc package

* feat: add logc, add AddGlobalFields for both logc and logx

* chore: add benchmarks

* chore: add more tests

* chore: simplify globalFields in logx

* chore: remove outdated comments

core/logx/logs_test.go

@@ -615,6 +615,8 @@ func TestSetup(t *testing.T) {
 		Path:        os.TempDir(),
 		Compress:    true,
 		KeepDays:    1,
+		MaxBackups:  3,
+		MaxSize:     1024 * 1024,
 	}))
 	setupLogLevel(LogConf{
 		Level: levelInfo,