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/RMB.js

@@ -0,0 +1,51 @@
+/*
+=== RMB Recommended Minimum Navigation Information ===
+
+To be sent by a navigation receiver when a destination waypoint is active.
+
+------------------------------------------------------------------------------
+       1  2  3   4    5     6    7    8     9 10  11  12 13 14
+       |  |  |   |    |     |    |    |     |  |   |   |  | |
+$--RMB,A,x.x,a,c--c,c--c,llll.ll,a,yyyyy.yy,a,x.x,x.x,x.x,A*hh
+------------------------------------------------------------------------------
+
+Field Number:
+
+ 1) Status, V = Navigation receiver warning
+ 2) Cross Track error - nautical miles
+ 3) Direction to Steer, Left or Right
+ 4) FROM Waypoint ID
+ 5) TO Waypoint ID
+ 6) Destination Waypoint Latitude
+ 7) N or S
+ 8) Destination Waypoint Longitude
+ 9) E or W
+10) Range to destination in nautical miles
+11) Bearing to destination in degrees True
+12) Destination closing velocity in knots
+13) Arrival Status, A = Arrival Circle Entered
+14) Checksum
+
+ */
+exports.TYPE = 'nav-info-waypoint';
+exports.ID = 'RMB';
+
+exports.decode = function(fields) {
+  return {
+    sentence: exports.ID,
+    type: exports.TYPE,
+    status: fields[1] == 'V' ? 'warning' : 'valid',
+    crossTrackError: +fields[2],
+    steer: fields[3],
+    fromWaypoint: fields[4],
+    toWaypoint: fields[5],
+    lat: fields[6],
+    latPole: fields[7],
+    lon: fields[8],
+    lonPole: fields[9],
+    range: +fields[10],
+    bearing: +fields[11],
+    vmg: +fields[12],
+    arrived: fields[13] == 'A' ? true : false
+  };
+}