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）

liner.js

@@ -0,0 +1,49 @@
+var Transform = require('stream').Transform;
+
+function Liner() {
+  Transform.call(this, { objectMode: true });
+}
+
+Liner.prototype = {
+  _transform: function (chunk, encoding, done) {
+    var data = chunk.toString()
+    if (this._lastLineData) data = this._lastLineData + data
+
+    var lines = data.split('\n')
+    this._lastLineData = lines.splice(lines.length - 1, 1)[0]
+
+    lines.forEach(this.push.bind(this))
+    done()
+  },
+  _flush: function (done) {
+    if (this._lastLineData) this.push(this._lastLineData)
+    this._lastLineData = null
+    done()
+  }
+}
+
+extend(Transform, Liner);
+
+function extend(base, sub) {
+  // Avoid instantiating the base class just to setup inheritance
+  // See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/create
+  // for a polyfill
+  // Also, do a recursive merge of two prototypes, so we don't overwrite
+  // the existing prototype, but still maintain the inheritance chain
+  // Thanks to @ccnokes
+  var origProto = sub.prototype;
+  sub.prototype = Object.create(base.prototype);
+  for (var key in origProto) {
+    sub.prototype[key] = origProto[key];
+  }
+  // Remember the constructor property was set wrong, let's fix it
+  sub.prototype.constructor = sub;
+  // In ECMAScript5+ (all modern browsers), you can make the constructor property
+  // non-enumerable if you define it like this instead
+  Object.defineProperty(sub.prototype, 'constructor', {
+    enumerable: false,
+    value: sub
+  });
+}
+
+module.exports = Liner;