Multi language issue/support

[Bkmd100]

Whoogle supports changing interface and search results language through environment variable. This may cause issues as farside does not. For example using https://farside.link/whoogle/search?q=elixir you may get forwarded to https://whooglesearch.net/ that only supports spanish results. Here's a table of whoogle instances and their supported languages (source: https://github.com/benbusby/whoogle-search):

suggested solution: specify the desired language in the url that so it forwards the search to whoogle instances that supports that language, something like this https://farside.link/whoogle/search?language=en&q=elixir

[benbusby]

Thanks for pointing that out. I updated the readme with the lang_interface param set, which should work to enforce the demo language for any up-to-date Whoogle instances.