* merge develop
* Add eslint dependencies, configs and scripts to plugins project
* run lint with Github action
* ignore tests and dist folders
* fun eslint with --fix and manual fixes, renamed __tests_ to __tests__
* add plugins packages folder to lint-staged config
* fix lint issue
* Smtp server datasource
- Done connection & test connection
* Worked on basic mail delivery
- Changed the icon
- Defined operations json
- Implemented text and html email sending
* Username / ID changed to encrypted
* Added attachments
* Changed placeholder of attachment
* Changed datasource name
* Changed query options
- Added multiple to_email option
- Added from name field
* Renamed the datasource
* cleaning post rename plugin problems
* Fixed minor code issues
* Added smtp documentation
