add support for Voyage AI (#2159)

### What problem does this PR solve?

#1853  #2138 add support for Voyage AI

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

---------

Co-authored-by: Zhedong Cen <cenzhedong2@126.com>
Co-authored-by: Kevin Hu <kevinhu.sh@gmail.com>

web/src/assets/svg/llm/voyage.svg

@@ -0,0 +1,32 @@
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web/src/pages/user-setting/setting-model/constant.ts

@@ -24,7 +24,7 @@ export const IconMap = {
   'LM-Studio': 'lm-studio',
   'OpenAI-API-Compatible': 'openai-api',
   cohere: 'cohere',
-  Lepton: 'lepton',
+  LeptonAI: 'lepton-ai',
   TogetherAI: 'together-ai',
   PerfXCloud: 'perfx-cloud',
   Upstage: 'upstage',
@@ -38,6 +38,7 @@ export const IconMap = {
   'Fish Audio': 'fish-audio',
   'Tencent Cloud': 'tencent-cloud',
   Anthropic: 'anthropic',
+  'Voyage AI': 'voyage',
 };
 
 export const BedrockRegionList = [