Core Concepts

[ryanolson]

The most general concepts will be located in mrc/core/concepts.

This PR added core::concepts::not_void which will be used quite broadly. It's first use will be in channels::v2 as we never have a channel with a data type of void.

[codecov]

Codecov Report

Merging #262 (d053eeb) into branch-23.01 (0151a7a) will decrease coverage by 0.04%.
The diff coverage is n/a.

Additional details and impacted files

@@               Coverage Diff                @@
##           branch-23.01     #262      +/-   ##
================================================
- Coverage         72.52%   72.47%   -0.05%     
================================================
  Files               376      376              
  Lines             12082    12082              
  Branches            921      921              
================================================
- Hits               8762     8757       -5     
- Misses             3320     3325       +5     

Flag	Coverage Δ
cpp	69.31% <ø> (-0.05%)	⬇️
py	38.31% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
cpp/mrc/src/internal/memory/host_resources.cpp	65.62% <0.00%> (-6.25%)	⬇️
cpp/mrc/src/public/coroutines/thread_pool.cpp	90.32% <0.00%> (-1.62%)	⬇️
cpp/mrc/src/internal/resources/manager.cpp	90.62% <0.00%> (-1.05%)	⬇️
cpp/mrc/src/internal/system/partitions.cpp	78.19% <0.00%> (-0.76%)	⬇️

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[mdemoret-nv]

/merge