I18n default value text setting

[MJ17]

I found that the sdk does not support i18n for defaultValue of text-setting I created an issue ticket https://github.com/SmartThingsCommunity/smartapp-sdk-nodejs/issues/125 Since it's just an easy task, I changed the code by myself and created a pull request. Please take a look.

Types of changes

added a line of code in the constructor of text-setting.

• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)
• [v] I have read the CONTRIBUTING document
• [v] My code follows the code style of this project (hint: install an xo editor plugin)
• [ ] Any required documentation has been added
• [ ] I have added tests to cover my changes

[lgtm-com[bot]]

This pull request introduces 1 alert when merging aa8f5ef649fa69e1e1b7e7c35d533cc8fb62a972 into ea3ed0f8aac5bd0efb0cac85289895d2225dddd0 - view on LGTM.com

new alerts:

• 1 for Unused variable, import, function or class