sync cpp library

• mutex
• condition_variable
• go channels (buffered and unbuffered)
• mpms queue
• atomic counter

Required:

• clang++-15
• Conan 1.59.0

Channels:

• buffered channels.
• unbuffered channels.
• buffered channels with MPMC queue.

atomic counter

• benchmark

Benchmark	Time	CPU	Iterations
simple_counter/iterations:10	21221 us	352 us	10
shards_counter/iterations:10	4953 us	247 us	10

lockfree

• stack with counter
• stack with hazard pointers