v2.3.0: Make types more generic

What

Tried to make the typings for the Elements and nested ComponentObject functions a bit easier to manage. TypeScript would produce errors on certain ElementSelectorFunction instances, for example, like returning a HTMLAnchorElement, so it was better to reference the Cypress return types for element selectors there.

Also did the same for the ComponentObjectFunction, where it uses a generic type for determining the component object function. This helps avoid issues with protected elements and components producing warnings when they are declared public in an extended class.

See:

• Cypress JQuerySelector interface
• get selector type