Add show_node_id command (closes #704)

[cwgoes]

Ref #704 (just show_node_id, not the rest of the command set yet)

[codecov]

Codecov Report

Merging #705 into develop will decrease coverage by 0.49%.
The diff coverage is 0%.

@@            Coverage Diff             @@
##           develop     #705     +/-   ##
==========================================
- Coverage    65.75%   65.26%   -0.5%     
==========================================
  Files           41       42      +1     
  Lines         1977     1992     +15     
==========================================
  Hits          1300     1300             
- Misses         566      581     +15     
  Partials       111      111

[rigelrozanski]

Need to refactor all these commands to have the funcs defined in the cobra.Command - when the func is so small it's confusing to have to have an extra type to relay the information. - but will refactor all together

[martindale]

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