Use shellcheck directive instead of excludes

[forslund]

Description

This uses shellcheck directives instead of excludes only available in CICD as suggested by @PureTryOut.

This leaves SC1090/1091 as a general excludes, these are set in the .shellcheckrc to make sure the developer gets the same checks as the CI does.

How to test

Ensure the CICD approves.

Contributor license agreement signed?

CLA [ Yes ]

[devops-mycroft]

Voight Kampff Integration Test Succeeded (Results)

[codecov-commenter]

Codecov Report

Merging #3030 (9d2746a) into dev (ea15759) will increase coverage by 0.01%. The diff coverage is 65.00%.

:exclamation: Current head 9d2746a differs from pull request most recent head b0f9a10. Consider uploading reports for the commit b0f9a10 to get more accurate results

@@            Coverage Diff             @@
##              dev    #3030      +/-   ##
==========================================
+ Coverage   53.04%   53.06%   +0.01%     
==========================================
  Files         123      123              
  Lines       11170    11187      +17     
==========================================
+ Hits         5925     5936      +11     
- Misses       5245     5251       +6     

Impacted Files	Coverage Δ
mycroft/client/enclosure/base.py	0.00% <0.00%> (ø)
mycroft/tts/espeak_tts.py	70.27% <72.22%> (+0.27%)	:arrow_up:
mycroft/tts/tts.py	79.27% <0.00%> (-0.33%)	:arrow_down:

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