Add aligned stack class.

This will be used for storing thread tasks aligned in continous memory, allowing different theads to work on the data without interfearing.
3 jobs from basic_taskmodel in 2 minutes 15 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Build
passed #2692
build_cmake

00:35

 
  Test
passed #2693
run_tests

00:32

 
  Sanitizer
passed #2694
run_thread_sanitizer

01:07