CLAP: Host Params

[mfisher31]

      // clap_host_params
      virtual bool implementsParams() const noexcept { return false; }
      virtual void paramsRescan(clap_param_rescan_flags flags) noexcept {}
      virtual void paramsClear(clap_id paramId, clap_param_clear_flags flags) noexcept {}
      virtual void paramsRequestFlush() noexcept {}