added a build script for windows and documentation for it

build/build_windows.ps1

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+if ($args -contains "-it") {
+    if (-not (Get-Command git -ErrorAction SilentlyContinue)) {
+        winget install --id Git.Git -e
+    }
+    if (-not (Get-Command python -ErrorAction SilentlyContinue)) {
+        winget install --id Python.Python -e
+    }
+    if (-not (Get-Command cl -ErrorAction SilentlyContinue)) {
+        winget install --id Microsoft.VisualStudio.2022.BuildTools -e
+    }
+}
+if ($args -contains "-ci") {
+    Set-Location ..
+} else {
+    if (-not (Get-Command git -ErrorAction SilentlyContinue)) {
+        winget install --id Git.Git -e
+    }
+    git clone https://github.com/samtupy/nvgt
+    Set-Location -Path "nvgt"
+}
+$windevPath = "windev"
+if (-not (Test-Path $windevPath) -or (Get-ChildItem $windevPath -Recurse | Measure-Object).Count -eq 0) {
+    $windevZipUrl = "https://nvgt.gg/windev.zip"
+    $zipFile = "$env:TEMP\windev.zip"
+    Invoke-WebRequest -Uri $windevZipUrl -OutFile $zipFile
+    New-Item -ItemType Directory -Path $windevPath -Force
+    Expand-Archive -Path $zipFile -DestinationPath $windevPath -Force
+}
+python -m pip install scons
+scons -s

doc/src/advanced/Building NVGT For windows.md

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+# building nvgt on windows
+## building with the build_windows.ps1 script
+there is a {script for building nvgt for windows}(https://github.com/samtupy/nvgt/blob/main/build/build_windows.sh)
+this script can take multiple parameters for controlling the behaviour of the script
+* -it: this parameter instructs the script to download the relevant tooling that will be used, this includes a compiler, python, and git
+*ci: this parameter tells the script that you have already cloned the repo and it will proseed to download dependencies and build nvgt
+### notes
+powershell might refuse to execute the script do to execution policys, in that case run the command:
+Set-ExecutionPolicy -ExecutionPolicy Unrestricted -Scope Process
+this will apply this change for the current session of powershell only
+for a more permanent solution run one of the following:
+* Set-ExecutionPolicy -ExecutionPolicy Unrestricted -Scope CurrentUser: this will set this property for the current user only
+* Set-ExecutionPolicy -ExecutionPolicy Unrestricted -Scope LocalMachine: this will do it for the intire system
+setting this setting permanently requires running powershell as admin
+## building nvgt manualy
+if you do not want to use the script for building nvgt you can do it manualy,
+### required software
+* a c++ compiler: the one coming with microsoft visual studio22 comunity eddition is recommended
+* git: for cloning the repository
+* python: for installing and using scons
+### instructions
+* 1. open a command prompt and navigate to a directory where you want to download nvgt
+* 2. run the following command: git clone https://github.com/samtupy/nvgt
+* 3. type cd nvgt
+* 4. open a webb browser and (download windev.zip){https://nvgt.gg/windev.zip}
+*5. extract windev.zip to the github repo you cloned earlyer/windev. so if i cloned the repo to c:\cloned_repos\nvgt the windev.zip should be extracted to c:\cloned_repos\nvgt\windev
+6. go back to your command prompt and run the following commands:
+python -m pip install scons
+scons -s
+#### notes
+the scons -s command and pip and or python commands might not work correctly. in that case, google on how to add python packages to environment variable or something along those lines