Python Style printf for C++ with pprintpp

pprintpp is a C++ header-only library that brings Python-style `{}` placeholder syntax to printf, automatically deducing the correct format specifiers at compile time using template metaprogramming. It eliminates common printf pitfalls like wrong format specifiers for 64-bit integers, adds compile-time brace mismatch detection, and generates zero runtime overhead — the binary output is identical to hand-written printf calls. The library supports custom precision/formatting hints inside braces (e.g. `{0.3}` for floats, `{x}` for hex, `{s}` for strings) and handles 32/64-bit portability automatically through the type system.