add Cloudflare AI Gateway engine

add Cloudflare AI Gateway engine

add settings for Cloudflare AI Gateway engine

set utf8 encode for data, fix non english char cause 500 error

format json data

fixed indentation and config format error

fix line-length limitation in CI

reformatted code for CI

reformatted code for CI

limit system prompts to less 120 chars

cleanup unused variable & format code

searx/settings.yml

@@ -482,6 +482,23 @@ engines:
     # to show premium or plus results too:
     # skip_premium: false
 
+  - name: cloudflareai
+    engine: cloudflareai
+    shortcut: cfai
+    # get api token and accont id from https://developers.cloudflare.com/workers-ai/get-started/rest-api/
+    cf_account_id: 'your_cf_accout_id'
+    cf_ai_api: 'your_cf_api'
+    # create your ai gateway by https://developers.cloudflare.com/ai-gateway/get-started/creating-gateway/
+    cf_ai_gateway: 'your_cf_ai_gateway_name'
+    # find the model name from https://developers.cloudflare.com/workers-ai/models/#text-generation
+    cf_ai_model: 'ai_model_name'
+    # custom your preferences
+    # cf_ai_model_display_name: 'Cloudflare AI'
+    # cf_ai_model_assistant: 'prompts_for_assistant_role'
+    # cf_ai_model_system: 'prompts_for_system_role'
+    timeout: 30
+    disabled: true
+
   # - name: core.ac.uk
   #   engine: core
   #   categories: science