[clang-format] Constructor initializers

We have a lot of code in this form:

NetworkStyle::NetworkStyle(const QString &appName, const QString &appIcon, const char *titleAddText, const QString &splashImage):
< 4 spaces >appName(appName),
< 4 spaces >appIcon(appIcon),
< 4 spaces >titleAddText(qApp->translate(SplashScreen, titleAddText)),
< 4 spaces >splashImage(splashImage)

and using our .clang-format file [1], we'd get a lot of white space (on line 2-5) due to /ColumnLimit: 0/ and /ConstructorInitializerAllOnOneLineOrOnePerLine: false/

NetworkStyle::NetworkStyle(const QString& appName, const QString& appIcon, const char* titleAddText, const QString& splashImage) : appName(appName),
< 131 spaces > appIcon(appIcon),
< 131 spaces > titleAddText(qApp->translate("SplashScreen", titleAddText)),
< 131 spaces > splashImage(splashImage)

One can get rid of the excessive white space by setting /BreakConstructorInitializersBeforeComma: true/. However, this would change our default coding style and
personally I think it's ugly.

Would it make sense to introduce new flags like /BreakConstructorInitializers*After*Comma/ or /ConstructorInitializer*Always*OnePerLine/, as this appears impossible to achieve with current
style options?


[1] <https://github.com/bitcoin/bitcoin/blob/be9a9a3d2253ceccf123572b97a890c489a5a9be/src/.clang-format&gt;