feat: 导入 NMEA-0183 GPS 协议解析库（node-nmea）

NMEA-0183 语句解析器，含 21 个语句类型 codec 与配套单元测试。

- codecs/：APB/BWC/DBT/GGA/GLL/GRMT/GSA/GSV/HDG/HDM/HDT/MWV/RDID/
  RMB/RMC/ROT/RSA/TXT/VTG/VWR/ZDA
- test/：各 codec 对应的 mocha 用例
- .github/workflows/：node与 npm-publish 流水线

许可证：MIT（原作者 James Penn）

codecs/ZDA.js

@@ -0,0 +1,29 @@
+/*
+  ZDA Time & Date – UTC, Day, Month, Year and Local Time Zone
+          1         2 3   4   5   6 7
+          |         | |   |   |   | |
+  $--ZDA,hhmmss.ss,xx,xx,xxxx,xx,xx*hh
+  1) Local zone minutes description, same sign as local hours
+  2) Local zone description, 00 to +/- 13 hours
+  3) Year
+  4) Month, 01 to 12
+  5) Day, 01 to 31
+  6) Time (UTC)
+  7) Checksum
+ */
+
+exports.ID = 'ZDA';
+exports.TYPE = 'time-zone';
+
+exports.decode = function(fields) {
+  return {
+    sentence: exports.ID,
+    type: exports.TYPE,
+    timestamp: fields[1],
+    day: fields[2],
+    month: fields[3],
+    year: fields[4],
+    ltzh: fields[5],
+    ltzn: fields[6]
+  };
+}