change list of version to list of option.

[longlongyang]

fix #170

[jyao1]

question: Why we dont need to change key_exchange_req?

[longlongyang]

question: Why we dont need to change key_exchange_req?

Because requester use pre-defined opaque array, other than constructing opaque with the secure version list in SpdmConfigInfo

rust-spdm/spdmlib/src/requester/key_exchange_req.rs

Lines 103 to 128 in 72c6977

	let mut opaque;
	if self.common.negotiate_info.spdm_version_sel < SpdmVersion::SpdmVersion12 {
	opaque = SpdmOpaqueStruct {
	data_size: crate::common::opaque::REQ_DMTF_OPAQUE_DATA_SUPPORT_VERSION_LIST_DSP0277
	.len() as u16,
	..Default::default()
	};
	opaque.data[..(opaque.data_size as usize)].copy_from_slice(
	crate::common::opaque::REQ_DMTF_OPAQUE_DATA_SUPPORT_VERSION_LIST_DSP0277.as_ref(),
	);
	} else if self.common.negotiate_info.opaque_data_support
	== SpdmOpaqueSupport::OPAQUE_DATA_FMT1
	{
	opaque = SpdmOpaqueStruct {
	data_size:
	crate::common::opaque::REQ_DMTF_OPAQUE_DATA_SUPPORT_VERSION_LIST_DSP0274_FMT1
	.len() as u16,
	..Default::default()
	};
	opaque.data[..(opaque.data_size as usize)].copy_from_slice(
	crate::common::opaque::REQ_DMTF_OPAQUE_DATA_SUPPORT_VERSION_LIST_DSP0274_FMT1
	.as_ref(),
	);
	} else {
	return Err(SPDM_STATUS_UNSUPPORTED_CAP);
	}

[longlongyang]

REF: #177