Some improvements for clang

Improving endian reader interface

Update coverity-scan.yml

Update snapshots-windows.yml

Missing configure check

Fixing ASM decompressors when not loop unrolling

Introduce Comper-X compression format and toolset.

Seeing if I can get LGTM working

Why do they have a severely outdated version of cmake?

Turns out cmake 3.19 is needed for aliasing interface libs