* golangci-lint: add and apply more stricter linting rules
* github: drop security workflow now that we use gosec linter inside golangci-lint
* github: use official golangci-lint CI linter
* Add editorconfig and gitattributes file
* add envvar expose middleware
* fix readme remove redundant word
* change hard coded json marshal to app config marshaller
* update readme
* update all lang readme
* change t.setenv to os.setenv as backward compability reason
* change io.readall to ioutil.readall
* Update envvar.go
* remove get method that only used in test
* remove unused method from envvar struct
* remove path variable from config, update readme, add new test case
Co-authored-by: RW <rene@gofiber.io>
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