Improve Windows Installer Script

[mrpalide]

Did you run make format && make check? Yes

Fixes #-

Changes:

• change/refactor script.ps1 of windows installer
• add win-installer-latest to Makefile for create installer on last release. (Currently, we don't have needed archive file for v0.6.0, but will available for v1.0.0 release)
• add CUSTOM_VERSION parameter to win-installer command to create installer for specific version. Could use for both released or pre-release releases.

How to test this PR:

• use make win-installer CUSTOM_VERSION=v1.0.0-rc5 for test this

Except Behavior:

• Console logs should be like this:

  

• And two msi installer file should created by these names:

  • skywire-systray-v1.0.0-rc5-windows-amd64.msi
  • skywire-systray-v1.0.0-rc5-windows-386.msi

[ersonp]

The rc-5 release has no windows-arm64 Archive

#    => Create Installer for arm64                       #
#       1. Preparing Stage...                            #
#       2. Fetching Archive from GitHub...               #
https://github.com/skycoin/skywire/releases/download/v1.0.0-rc5/skywire-systray-v1.0.0-rc5-windows-arm64.zip
Invoke-WebRequest : Not Found
At C:\skywire\scripts\win_installer\script.ps1:44 char:9
+         Invoke-WebRequest $downloadURL -o archive.zip
+         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (System.Net.HttpWebRequest:HttpWebRequest) [Invoke-WebRequest], WebExc
   eption
    + FullyQualifiedErrorId : WebCmdletWebResponseException,Microsoft.PowerShell.Commands.InvokeWebRequestCommand
make: *** [Makefile:386: win-installer] Error 1```