docs: 更新 lighter-python-main 文档，添加示例代码和 API 说明，重构部分内容以提高可读性

docs/lighter/lighter-python-main/examples/create_sl_tp.py

@@ -0,0 +1,70 @@
+import asyncio
+import logging
+import lighter
+
+logging.basicConfig(level=logging.DEBUG)
+
+# The API_KEY_PRIVATE_KEY provided belongs to a dummy account registered on Testnet.
+# It was generated using the setup_system.py script, and servers as an example.
+BASE_URL = "https://testnet.zklighter.elliot.ai"
+API_KEY_PRIVATE_KEY = "0xe0fa55e11d6b5575d54c0500bd2f3b240221ae90241e3b573f2307e27de20c04ea628de3f1936e56"
+ACCOUNT_INDEX = 22
+API_KEY_INDEX = 3
+
+
+def trim_exception(e: Exception) -> str:
+    return str(e).strip().split("\n")[-1]
+
+
+async def main():
+    client = lighter.SignerClient(
+        url=BASE_URL,
+        private_key=API_KEY_PRIVATE_KEY,
+        account_index=ACCOUNT_INDEX,
+        api_key_index=API_KEY_INDEX,
+    )
+
+    tx = await client.create_tp_order(
+        market_index=0,
+        client_order_index=0,
+        base_amount=1000,  # 0.1 ETH
+        trigger_price=500000,
+        price=500000,
+        is_ask=False
+    )
+    print("Create Order Tx:", tx)
+
+
+    tx = await client.create_sl_order(
+        market_index=0,
+        client_order_index=0,
+        base_amount=1000,  # 0.1 ETH
+        trigger_price=500000,
+        price=500000,
+        is_ask=False
+    )
+    print("Create Order Tx:", tx)
+
+    tx = await client.create_tp_limit_order(
+        market_index=0,
+        client_order_index=0,
+        base_amount=1000,  # 0.1 ETH
+        trigger_price=500000,
+        price=500000,
+        is_ask=False
+    )
+
+    tx = await client.create_sl_limit_order(
+        market_index=0,
+        client_order_index=0,
+        base_amount=1000,  # 0.1 ETH
+        trigger_price=500000,
+        price=500000,
+        is_ask=False
+    )
+    print("Create Order Tx:", tx)
+    await client.close()
+
+
+if __name__ == "__main__":
+    asyncio.run(main())