HTML support

Is your feature request related to a problem? Please describe.

It would be really handy to extract data from HTML with same tool, we use for JSON, YAML, etc.

Describe the solution you'd like

Being able to do:

curl https://example.org | dasel -r html 'html.head.title'

Describe alternatives you've considered

Using number of separate utils

Additional context

Nope Thanks for great tool! :heart: