[ISSUE #8622] 移除 environment 概念

[onewe]

移除 environment 概念使用 NProperties 代替, 详情见: https://www.yuque.com/docs/share/e9fcd9a3-f3fb-496d-9b8b-bf4b88db4df0?# 《Nacos-client 模块参数改造》

Related #8622.

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[codecov-commenter]

Codecov Report

Merging #8991 (94bfe30) into develop (bf76143) will increase coverage by 0.39%.
The diff coverage is 85.61%.

@@              Coverage Diff              @@
##             develop    #8991      +/-   ##
=============================================
+ Coverage      43.22%   43.61%   +0.39%     
- Complexity      4718     4757      +39     
=============================================
  Files            912      910       -2     
  Lines          32584    32639      +55     
  Branches        3761     3770       +9     
=============================================
+ Hits           14085    14237     +152     
+ Misses         17139    17000     -139     
- Partials        1360     1402      +42     

Impacted Files	Coverage Δ
...a/com/alibaba/nacos/client/constant/Constants.java	16.66% <ø> (ø)
...ibaba/nacos/client/env/AbstractPropertySource.java	100.00% <ø> (ø)
...alibaba/nacos/client/env/SearchableProperties.java	77.52% <77.52%> (ø)
...nacos/client/env/DefaultSettingPropertySource.java	86.66% <83.33%> (+11.66%)	⬆️
...libaba/nacos/client/env/JvmArgsPropertySource.java	100.00% <100.00%> (ø)
...java/com/alibaba/nacos/client/env/NProperties.java	100.00% <100.00%> (ø)
...aba/nacos/client/env/PropertiesPropertySource.java	100.00% <100.00%> (ø)
.../java/com/alibaba/nacos/client/env/SourceType.java	100.00% <100.00%> (ø)
...baba/nacos/client/env/SystemEnvPropertySource.java	55.55% <100.00%> (+3.55%)	⬆️
...v2/upgrade/doublewrite/RefreshStorageDataTask.java	0.00% <0.00%> (-100.00%)	⬇️
... and 43 more

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