Using extant searxng with https

[genevera]

I noticed that the SearchWeb class assumes searxng will be available via http and that this is in fact hard-coded. I have an extant searxng service running with tls enabled that I'd like to use. Ideally I could set some sort of env var (e.g SEARXNG_BASE_URL) which could be used if set, else use the current method of setting hostname and port to build the url. Or something like that. I'm happy to code it up if the functionality as I described it sounds good to you.

[SPThole]

Thanks for the suggestion, was already working on it, will push soon with all other improvements!