feat: Add sougou web search API for backend, add config panel in for frontend.

src/lib/i18n/locales/en-US/translation.json

@@ -424,6 +424,8 @@
 	"Enter Mojeek Search API Key": "",
 	"Enter Number of Steps (e.g. 50)": "",
 	"Enter Perplexity API Key": "",
+	"Enter Sougou Search API sID": "",
+	"Enter Sougou Search API SK": "",
 	"Enter proxy URL (e.g. https://user:password@host:port)": "",
 	"Enter reasoning effort": "",
 	"Enter Sampler (e.g. Euler a)": "",
@@ -822,6 +824,8 @@
 	"Permission denied when accessing microphone: {{error}}": "",
 	"Permissions": "",
 	"Perplexity API Key": "",
+	"Sougou Search API sID": "",
+	"Sougou Search API SK": "",
 	"Personalization": "",
 	"Pin": "",
 	"Pinned": "",