[feat] engines: add support for Kagi (requires API key)

searx/settings.yml

@@ -1294,6 +1294,35 @@ engines:
     shortcut: iq
     disabled: true
 
+  # - name: kagi
+  #   engine: kagi
+  #   categories: [general, web]
+  #   shortcut: kg
+  #   api_key: ""  # required
+  #   kagi_categ: search
+
+  # - name: kagi.news
+  #   engine: kagi
+  #   categories: [news, web]
+  #   shortcut: kgn
+  #   api_key: ""  # required
+  #   kagi_categ: news
+
+  # - name: kagi.images
+  #   engine: kagi
+  #   categories: [images, web]
+  #   paging: false
+  #   shortcut: kgi
+  #   api_key: ""  # required
+  #   kagi_categ: images
+
+  # - name: kagi.videos
+  #   engine: kagi
+  #   categories: [videos, web]
+  #   shortcut: kgv
+  #   api_key: ""  # required
+  #   kagi_categ: videos
+
   - name: jisho
     engine: jisho
     shortcut: js