Init JS variable in more reliable and quick way, reduce redundant code

- Redirect the nuget \3rd folder to ..\packages folder as default by
  remove the nuget.config file
- Update csproj file: remove unnecessary scripts for old nuget
  packages on old .Net framework
- Upgrade nuget packages to .Net framework 4.7.2 as the target framework
- Downgrade Fody to 4.2.1. The 5.0.0+ requires MSBuild 16 and above

- Uncompress the text file for better version control
- Touch the PAC files in first place

- Split the file operations to new PACDaemon
- More precise matching logic for handling PAC content http request

Support Windows 10 1903 Light Theme

Support Windows 10 1903 Light Theme (Menu icon color)

binary modified via OD with tray icon function calls bypassed

Signed-off-by: Syrone Wong <wong.syrone@gmail.com>

Auto register hotkeys

- update mbedtls to 2.7.0, use new md5 api
- update libsodium to 1.0.16
- static link to openssl 1.1.0g, check libsscrypto repo for detail

Add OpenSSL 1.1.0g support due to hardware acceleration

Note: If you want to compile it by yourself, please make sure
do NOT use `no-asm` configure option, since the main point of
this commit is to utilize assembly in openssl

Add OpenSSL test

to get rid of deep copy

- update NuGet pkg

Signed-off-by: Syrone Wong <wong.syrone@gmail.com>

replace zxing with NuGet pkg

cn -> zh-CN
zh-tw -> zh-TW
jp -> ja

This reverts commit be3cc3f3a6.

This reverts commit 0d4d01af3b.

This reverts commit 5ba0dffa5d.

This reverts commit b04c59d8e6.

No more http->socks5 transform.

This fix the proxy issue on win10 insider preview.

Signed-off-by: Syrone Wong <wong.syrone@gmail.com>

Use singleton mode for hotkey callbacks.

- Create instance once, bind it to ShadowsocksController

Signed-off-by: Syrone Wong <wong.syrone@gmail.com>

e.g. Dial-up connection and VPN

- use INTERNET_OPTION_PROXY_SETTINGS_CHANGED instead of INTERNET_OPTION_SETTINGS_CHANGED

Signed-off-by: Syrone Wong <wong.syrone@gmail.com>