Function trim

src/models/stable_audio/request.cpp:16–21

namespace {

std::string trim(std::string value) {
    auto is_space = [](unsigned char ch) { return std::isspace(ch) != 0; };
    value.erase(value.begin(), std::find_if(value.begin(), value.end(), [&](char ch) { return !is_space(static_cast<unsigned char>(ch)); }));
    value.erase(std::find_if(value.rbegin(), value.rend(), [&](char ch) { return !is_space(static_cast<unsigned char>(ch)); }).base(), value.end());
    return value;
}

std::vector<std::string> split_pipe(const std::string & value) {
    std::vector<std::string> out;