Add a standards namespace

**Is your feature request related to a problem? Please describe.** <!-- A clear and concise description of what the problem is. --> Often when developing, I find myself in need of using one of the ISO standards sunch as country codes. Rather than writing a static file myself, I'd like to use a module where these are defined. **Describe the solution you'd like** <!-- A clear and concise description of what you want to happen. --> Create a standards namespace where the collection of commonly used standards can live. **Describe alternatives you've considered** <!-- A clear and concise description of any alternative solutions or features you've considered. --> Using another library from NPM, although this would introduce the need of vetting a third party, and digging through the registry for finding a good package.