refactor: divide agent logic and gateway into different package (#90)

* feat: add @memoh/agent

* chore: use @memoh/agent in @memoh-gateway

packages/agent/tsconfig.json

@@ -0,0 +1,22 @@
+{
+  "compilerOptions": {
+    "target": "ES2022",
+    "module": "ESNext",
+    "lib": ["ES2022"],
+    "moduleResolution": "bundler",
+    "allowImportingTsExtensions": true,
+    "noEmit": true,
+    "strict": true,
+    "esModuleInterop": true,
+    "skipLibCheck": true,
+    "forceConsistentCasingInFileNames": true,
+    "resolveJsonModule": true,
+    "allowSyntheticDefaultImports": true,
+    "jsx": "react-jsx",
+    "outDir": "./dist",
+    "rootDir": "./src",
+  },
+  "include": ["src/**/*"],
+  "exclude": ["node_modules", "dist"]
+}
+