feat: help message post build command

[jjmachan]

Description

Show the help message after the `bentoctl build command has been run.

How it looks in the terminal

closes: #112

[codecov[bot]]

Codecov Report

Merging #151 (64b4ea5) into main (122d3fc) will increase coverage by 0.06%. The diff coverage is 83.33%.

@@            Coverage Diff             @@
##             main     #151      +/-   ##
==========================================
+ Coverage   72.20%   72.27%   +0.06%     
==========================================
  Files          18       18              
  Lines         957      963       +6     
==========================================
+ Hits          691      696       +5     
- Misses        266      267       +1     

Flag	Coverage Δ
unit-tests	72.27% <83.33%> (+0.06%)	:arrow_up:

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Impacted Files	Coverage Δ
bentoctl/cli/__init__.py	84.78% <50.00%> (-0.78%)	:arrow_down:
bentoctl/console.py	94.11% <100.00%> (+1.80%)	:arrow_up:

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