fix: 修复部份 bug (#131)

* fix: 主题模式图标不一致的问题[#125]

* fix: 修复样式问题[#123][#126]

* perf: 优化代码和添加类型

service/src/types.ts

@@ -0,0 +1,30 @@
+import type { FetchFn, openai } from 'chatgpt'
+
+export interface ChatContext {
+  conversationId?: string
+  parentMessageId?: string
+}
+
+export interface ChatGPTAPIOptions {
+  apiKey: string
+  debug?: boolean
+  completionParams?: Partial<openai.CompletionParams>
+}
+
+export interface ChatGPTUnofficialProxyAPIOptions {
+  accessToken: string
+  apiReverseProxyUrl?: string
+  model?: string
+  debug?: boolean
+  headers?: Record<string, string>
+  fetch?: FetchFn
+}
+
+export interface ModelConfig {
+  apiModel?: ApiModel
+  reverseProxy?: string
+  timeoutMs?: number
+  socksProxy?: string
+}
+
+export type ApiModel = 'ChatGPTAPI' | 'ChatGPTUnofficialProxyAPI' | undefined