Fix #17 do not report secret on error, add github action

[creharmony]

Fix #17 do not report secret on error, add github action

stay TODO:

• patch workflow
• minor workflow
• publish step for npmjs branch only
• remove travis
• how to declare security commit/fix ? cf. under.
• created advisory: GHSA-xw22-wv29-3299

How to declare vulerability :

• tweet
• Github doc. about Security advisory and Publishing a security advisory

[github-actions]

Total Coverage: 44.00%

Coverage Report

File	Branches	Funcs	Lines	Uncovered Lines
src
EtsyClient.js	47.83%	37.04%	44%	10, 116, 120, 122, 123, 128, 128, 128, 130, 133, 135, 135, 135, 136, 136, 136, 136, 136, 136, 138, 142, 142, 142, 143, 145, 152, 153, 154, 155, 155, 155, 155, 155, 156, 157, 157, 157, 158, 160, 165, 165, 165, 166, 168, 30, 31, 36, 37, 42, 43, 48, 49, 54, 55, 60, 61, 66, 67, 72, 73, 78, 79, 80, 86, 87, 95