Improve error message on kool deploy missing files

[fabriciojs]

Issue	#194
🪲 Bug Fix	Yes
⚠️ Break Change	No

Description

In case the file we are trying to list does not exist we only display a warning, since that will only happen in a git repository context and therefore should be the case of uncommitted deleted files like in the reported issue.

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Notes

The new message will be:

[codecov]

Codecov Report

Merging #273 (1c6ed4d) into master (8a8aec4) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #273   +/-   ##
=======================================
  Coverage   88.55%   88.55%           
=======================================
  Files          67       67           
  Lines        2630     2630           
=======================================
  Hits         2329     2329           
  Misses        278      278           
  Partials       23       23           

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