refactor(providers): modularize AiProvidersPage into separate provider components

src/components/providers/index.ts

@@ -0,0 +1,10 @@
+export { AmpcodeSection } from './AmpcodeSection';
+export { ClaudeSection } from './ClaudeSection';
+export { CodexSection } from './CodexSection';
+export { GeminiSection } from './GeminiSection';
+export { OpenAISection } from './OpenAISection';
+export { ProviderList } from './ProviderList';
+export { ProviderStatusBar } from './ProviderStatusBar';
+export * from './hooks/useProviderStats';
+export * from './types';
+export * from './utils';