Spot: additional search engines
## Summary
From a User:
There are many search engines listed in preferences under https://spot.ecloud.global/.
Request if you could consider few other Privacy oriented search engines similar to ones below.
1) https://swisscows.com/
2) https://www.onesearch.com
3) https://www.searchencrypt.com/home
4) https://search.brave.com
5) Epic search (?)
## Description
**Who will use the new feature?**
Spot users.
**What is the target of the new feature for this user?**
Have more choice of privacy-friendly search engines.
**Why this user would like to use this feature?**
Different/more varied results
## Examples
Be able to activate some of these engines in Spot preferences.
## Reflection
**Mockups**
**Diagrams**
## Validation
- Search with only one engine active: same/similar results as through engine directly
- Search with a combination of engines
issue