use Template7 as a module

Is your feature request related to a problem? Please describe.
It could be nice to be able to use Template7 as a module.

Describe the solution you'd like

// Import Template7
import Template7 from 'template7';

// Import Framework7 Core
import Framework7 from 'framework7/framework7-lite.js';

// Import Framework7 template7 module
import Framework7Template7 from 'framework7-template7';

// Init plugin
Framework7.use(Framework7Template7)

Describe alternatives you've considered
just detect if Template7 is imported and auto enable it

// Import Template7
import Template7 from 'template7';

// Import Framework7 Core
import Framework7 from 'framework7/framework7-lite.js';

Start by tracing the Framework7 Core import and the proposed framework7-template7 plugin entry point, then compare them with the existing Template7 import path. Determine whether the requested module should be enabled through Framework7.use or automatic detection, and verify that the documented imports work together.