feat: add chat page

src/types/chat-api.tsx

@@ -0,0 +1,17 @@
+export type ModelInfo = {
+  name: string;
+  family?: string | null;
+  parameter_size?: string | null;
+  quantization?: string | null;
+};
+
+export type ModelsResponse = {
+  models: ModelInfo[];
+};
+
+export type Role = 'system' | 'user' | 'assistant';
+
+export type Message = {
+  role: Role;
+  content: string;
+};