Many updates and improvements

- yamllint
- shfmt config
- fix Go bin path
- fix git credentials config
- add nvm default packages
- updated Brewfile

local/bin/x-check-git-attributes

@@ -17,4 +17,3 @@ if [[ "$missing_attributes" ]]; then
 else
   echo "All files have a corresponding rule in .gitattributes"
 fi
-