新增node download下的下载判断以及中文路径错误的修正

[lihengdao666]

在window环境测试发现npm run download下载后运行会发生
Emitted 'error' event on Database instance at:
] {
errno: 1,
code: 'SQLITE_ERROR'
}
经过研究发现是下载路径的问题，于是尝试新增了一小段判断环境并且下载win x86/64的小代码

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根据测试在window环境下如果存在中文目录
会出现错误
2022-10-22 23:51:12 D:\a_temp\windows\cppjieba\src\cppjieba\include\cppjieba\DictTrie.hpp:203 FATAL exp: [ifs.is_open()] false. open C:\Users\lihengdao\Desktop\github椤圭洰\sqlite\simple\examples\node\lib\dict\jieba.dict.utf8 failed.
尝试修改
node-sqlite3.js文件中的
var dict_path = path.join(ext_path, "dict");
为
var dict_path = "./lib/dict";
问题得到解决
但是其他环境下没有确定是否也存在该问题以及能否正常运行

---

个人开发能力不强
斗胆尝试提交一下
多有冒犯
希望大佬不要介意

[codecov]

Codecov Report

Merging #106 (e9f6e17) into master (a2388ab) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #106   +/-   ##
=======================================
  Coverage   95.77%   95.77%           
=======================================
  Files           3        3           
  Lines         213      213           
=======================================
  Hits          204      204           
  Misses          9        9           

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