Replace pynng functionality with pyzmq

[munrojm]

This PR replaces Pair1 use from pynng with a REP/REQ server-client setup from pyzmq. This hopefully fixes issues with maggma and new Apple M1 chips.

[lgtm-com]

This pull request introduces 2 alerts when merging 39a0b5f into d7d93f0 - view on LGTM.com

new alerts:

• 1 for Unused local variable
• 1 for Wrong number of arguments in a call

[codecov]

Codecov Report

Merging #543 (250d25a) into main (b14a5b2) will increase coverage by 0.09%.
The diff coverage is 98.21%.

@@            Coverage Diff             @@
##             main     #543      +/-   ##
==========================================
+ Coverage   89.02%   89.12%   +0.09%     
==========================================
  Files          40       40              
  Lines        2743     2768      +25     
==========================================
+ Hits         2442     2467      +25     
  Misses        301      301              

Impacted Files	Coverage Δ
src/maggma/cli/__init__.py	87.27% <75.00%> (+0.23%)	⬆️
src/maggma/cli/distributed.py	100.00% <100.00%> (ø)
src/maggma/cli/multiprocessing.py	94.59% <100.00%> (ø)
src/maggma/core/drone.py	92.42% <0.00%> (ø)

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[lgtm-com]

This pull request introduces 2 alerts when merging b800d24 into d7d93f0 - view on LGTM.com

new alerts:

• 1 for Unused local variable
• 1 for Wrong number of arguments in a call

[lgtm-com]

This pull request introduces 1 alert when merging b234f07 into d7d93f0 - view on LGTM.com

new alerts:

• 1 for Unused local variable

[lgtm-com]

This pull request introduces 1 alert when merging 65ccef6 into d7d93f0 - view on LGTM.com

new alerts:

• 1 for Unused import