feat(hooks): add useAgentClient hook for agent API client initialization

src/renderer/src/hooks/agents/useAgentClient.ts

@@ -0,0 +1,15 @@
+import { AgentApiClient } from '@renderer/api/agent'
+
+import { useSettings } from '../useSettings'
+
+export const useAgentClient = () => {
+  const { apiServer } = useSettings()
+  const { host, port, apiKey } = apiServer
+  const client = new AgentApiClient({
+    baseURL: `${host}:${port}`,
+    headers: {
+      Authorization: `Bearer ${apiKey}`
+    }
+  })
+  return client
+}