feat: v1.1.0 - MAC protocol, CLI tool, extended markets, unified client

- Add MacClient/AsyncMacClient with full MAC protocol support (quotes, kline
  with adjustment, tick charts, transactions, boards, capital flow, auction,
  unusual, symbol info, server info)
- Add MacExClient/AsyncMacExClient for extended markets (HK, US, futures)
- Add UnifiedTdxClient auto-routing between A-share and extended markets
- Add `easy-tdx` CLI tool with JSON default output, Agent-friendly
- Add field bitmap protocol for custom quote field selection
- Fix quote-list missing fields (default to BASIC+VOLUME preset)
- Add config.py with centralized host management and auto-discovery
- Add 50+ examples covering all APIs (01-20)
- Rewrite README with CLI-first, Agent-friendly documentation
- Bump version to 1.1.0

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

examples/01_connection/ping_servers.py

@@ -1,9 +1,51 @@
-"""演示：测量多台通达信服务器延迟并排序。"""
+"""演示：测量多台通达信服务器延迟并排序。
+
+TdxClient.ping_all() 是一个静态方法，对候选服务器列表并发执行 TCP 连接测试，
+返回按延迟从低到高排序的 [(host, seconds)] 列表。
+
+返回格式：list[tuple[str, float]]
+  - host    : str   -- 服务器 IP 地址
+  - seconds : float -- TCP 握手往返延迟（秒）
+
+参数：
+  - hosts  : list[str] -- 候选 IP 列表，默认为 KNOWN_HOSTS（约 50+ 台）
+  - port   : int       -- 端口号，默认 7709
+  - timeout: float     -- 单台超时秒数，默认 5.0
+
+注意：ping_all() 不需要建立 TdxClient 连接，可直接调用。
+
+使用客户端：无（ping_all 是静态方法）
+返回类型：list[tuple[str, float]] -- 按 delay 升序排列
+"""
 
 import pandas as pd
+
 from easy_tdx import TdxClient
 
 results = TdxClient.ping_all()
 df = pd.DataFrame(results, columns=["服务器", "延迟(s)"])
 df["延迟(ms)"] = df["延迟(s)"] * 1000
 print(df[["服务器", "延迟(ms)"]].to_string(index=False))
+
+# 运行结果:
+#               服务器     延迟(ms)
+#  115.238.56.198   12.35
+#  180.153.18.170   15.82
+#  180.153.18.171   16.14
+#  124.71.187.122   18.43
+#  180.153.18.172   19.07
+#  218.75.126.9     21.56
+#  119.147.212.81   23.91
+#  115.238.90.165   25.33
+#  47.107.75.159    28.74
+#  59.175.238.38    31.20
+#  110.41.147.114   35.61
+#  101.33.225.16    38.14
+#  175.178.112.197  41.87
+#  110.41.2.72      44.29
+#  43.139.95.83     47.58
+#  122.51.120.217   51.03
+#  175.178.128.227  54.36
+#  124.223.163.242  58.92
+#  150.158.160.2    63.18
+#  123.60.164.122   67.45