Change opta sub command

[nsarupr]

Description

Change the opta sub-command config to show to support future sub command usages.

Safety checklist

• This change is backwards compatible and safe to apply by existing users
• This change will NOT lead to data loss
• This change will NOT lead to downtime who already has an env/service setup

How has this change been tested, beside unit tests?

YOUR_ANSWER

[codecov]

Codecov Report

Merging #857 (f28d409) into main (820cacc) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main     #857   +/-   ##
=======================================
  Coverage   73.73%   73.73%           
=======================================
  Files         121      121           
  Lines        7976     7976           
=======================================
  Hits         5881     5881           
  Misses       2095     2095           

Flag	Coverage Δ
unittests	73.73% <100.00%> (ø)

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Impacted Files	Coverage Δ
opta/cli.py	72.97% <100.00%> (ø)
opta/commands/show.py	85.71% <100.00%> (ø)

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