Fix/client watch hot proxy

[hoang-rio]

• Update webpack.dev.js importConfig to compare with lastest AdGuardHome yaml schema
• Change file name to read from AdguardHome.yaml to AdGuardHome.yaml to work on Unix/Linux system

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 51.92%. Comparing base (ee01441) to head (496b8bf).

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Additional details and impacted files

@@           Coverage Diff           @@
##           master    #6708   +/-   ##
=======================================
  Coverage   51.92%   51.92%           
=======================================
  Files         186      186           
  Lines       15002    15002           
=======================================
  Hits         7790     7790           
  Misses       6464     6464           
  Partials      748      748           

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