Function string_format

subprojects/llama.cpp/tools/mtmd/clip-impl.h:406–419

//

static std::string string_format(const char * fmt, ...) {
    va_list ap;
    va_list ap2;
    va_start(ap, fmt);
    va_copy(ap2, ap);
    int size = vsnprintf(NULL, 0, fmt, ap);
    GGML_ASSERT(size >= 0 && size < INT_MAX); // NOLINT
    std::vector<char> buf(size + 1);
    int size2 = vsnprintf(buf.data(), size + 1, fmt, ap2);
    GGML_ASSERT(size2 == size);
    va_end(ap2);
    va_end(ap);
    return std::string(buf.data(), buf.size());
}

static void string_replace_all(std::string & s, const std::string & search, const std::string & replace) {
    if (search.empty()) {