Small Preparations and Fixes for s390x Architecture Support in ClickHouse

Small preparations for build on s390x (which is big-endian). #39627 (Harry Lee). #39656 (Harry Lee). Fixed Endian issue in BitHelpers for s390x. #39656 (Harry Lee). Implement a piece of code related to SipHash for s390x architecture (which is not supported by ClickHouse). #39732 (Harry Lee). Fixed an Endian issue in Coordination snapshot code for s390x architecture (which is not supported by ClickHouse). #39931 (Harry Lee). Fixed Endian issues in Codec code for s390x architecture (which is not supported by ClickHouse). #40008 (Harry Lee). Fixed Endian issues in reading/writing BigEndian binary data in ReadHelpers and WriteHelpers code for s390x architecture (which is not supported by ClickHouse). #40179 (Harry Lee).