Improve cmake

[wusto]

cmake is currently in a quite rudimentary state.

This set of commits tries to improve the maturity of cmake for the ref-folder:

• Add cmake definition for test compilation
• Add a install target for shared and static libraries
• Add ASAN and UBSAN build types for cmake (the cmake modules are copied from https://github.com/bmwcarit/MoCOCrW/tree/openssl1.1/cmake)
• Enable parallel test execution
• Add compiler flags for position independent executable and stack canaries

The CMakeLists.txt for avx2 is not changed.