feat: add new LLM provider Jiekou.AI (#11300)

### What problem does this PR solve?

_Briefly describe what this PR aims to solve. Include background context
that will help reviewers understand the purpose of the PR._

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

Co-authored-by: Jason <ggbbddjm@gmail.com>

web/src/constants/llm.ts

@@ -58,6 +58,7 @@ export enum LLMFactory {
   Longcat = 'LongCat',
   CometAPI = 'CometAPI',
   DeerAPI = 'DeerAPI',
+  JiekouAI = 'Jiekou.AI',
   Builtin = 'Builtin',
 }
 
@@ -122,5 +123,6 @@ export const IconMap = {
   [LLMFactory.Longcat]: 'longcat',
   [LLMFactory.CometAPI]: 'cometapi',
   [LLMFactory.DeerAPI]: 'deerapi',
+  [LLMFactory.JiekouAI]: 'jiekouai',
   [LLMFactory.Builtin]: 'builtin',
 };