[feat] engines: add findborg.com - general, news, images, videos (#6688)

Adds support for findborg.com which also uses the Brave results.

searx/settings.yml

@@ -946,6 +946,35 @@ engines:
     shortcut: fd
     disabled: true
 
+  - name: findborg
+    engine: findborg
+    shortcut: fi
+    findborg_categ: search
+    categories: general
+    inactive: true
+
+  - name: findborg images
+    engine: findborg
+    shortcut: fii
+    paging: false
+    findborg_categ: images
+    categories: images
+    inactive: true
+
+  - name: findborg videos
+    engine: findborg
+    shortcut: fiv
+    findborg_categ: videos
+    categories: videos
+    inactive: true
+
+  - name: findborg news
+    engine: findborg
+    shortcut: fin
+    findborg_categ: news
+    categories: news
+    inactive: true
+
   - name: findfiles
     engine: findfiles
     findfiles_categ: all