modernize-use-bool-literals

Finds integer literals which are cast to bool.

bool p = 1;
bool f = static_cast<bool>(1);
std::ios_base::sync_with_stdio(0);
bool x = p ? 1 : 0;

// transforms to

bool p = true;
bool f = true;
std::ios_base::sync_with_stdio(false);
bool x = p ? true : false;