Cli: Add endpoint to print information about a passed-in offer

[TheCharlatan]

This completes #457 by adding an endpoint to display information about an offer. It is similar to the take command but does not interact with any of the other microservices.

[codecov-commenter]

Codecov Report

Merging #496 (d57e357) into main (9f46ef8) will increase coverage by 0.0%.
The diff coverage is 6.7%.

@@          Coverage Diff          @@
##            main    #496   +/-   ##
=====================================
  Coverage   12.0%   12.0%           
=====================================
  Files         29      30    +1     
  Lines       8515    8522    +7     
=====================================
+ Hits        1022    1023    +1     
- Misses      7493    7499    +6     

Impacted Files	Coverage Δ
src/cli/command.rs	27.0% <0.0%> (-0.6%)	⬇️
src/cli/opts.rs	45.3% <25.0%> (-0.8%)	⬇️
src/swapd/runtime.rs	0.0% <0.0%> (ø)
src/swapd/syncer_client.rs	0.0% <0.0%> (ø)

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[h4sh3d]

utACK