Improving error message for typos on kool run

[fabriciojs]

Issue	#251
⚠️ Break Change	No

Description

• Adding new error type for handling possible typos on kool run usage.
• NOT INCLUDED on this the offering to the user to quickly run the correct command. Future implementation should expand parser.ErrPossibleTypo to handle it.

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Notes

New error messages when the targetted script is not found, but we have a similar script name:

[codecov]

Codecov Report

Merging #252 (76a3033) into master (4d7176e) will increase coverage by 0.13%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #252      +/-   ##
==========================================
+ Coverage   88.03%   88.16%   +0.13%     
==========================================
  Files          66       66              
  Lines        2565     2578      +13     
==========================================
+ Hits         2258     2273      +15     
+ Misses        283      280       -3     
- Partials       24       25       +1     

Impacted Files	Coverage Δ
cmd/parser/parser.go	83.60% <100.00%> (+2.83%)	⬆️
cmd/parser/yml.go	82.75% <100.00%> (+1.62%)	⬆️
cmd/run.go	100.00% <100.00%> (ø)
cmd/shell/shell.go	82.10% <0.00%> (+2.10%)	⬆️

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