Add script to generate nupkg files for choco

app/make-nupkg.ps1

@@ -0,0 +1,65 @@
+$silentArgs = '/S'
+$packageName = 'openflexure-ev'
+$fileType = 'exe'
+
+$packagepath = Join-Path -Path $PSScriptRoot -ChildPath '..\'
+$packageJson = Join-Path -Path $packagepath -ChildPath '\package.json'
+$outpath = Join-Path -Path $packagepath -ChildPath 'release-builds\choco'
+
+echo $packagepath
+echo $outpath
+
+If(!(test-path $outpath))
+{
+  New-Item -ItemType Directory -Force -Path $outpath
+}
+
+# Get version from package.json
+$FullVersion = (Get-Content $packageJson) -join "`n" | ConvertFrom-Json | Select -ExpandProperty "version"
+$MajVer, $MinVer = $FullVersion.Split("-")  # Split version number from beta string
+$MinVer = $MinVer.Replace(".",  "")  # Convert symver into nuspec ver
+$version = $MajVer + "-" + $MinVer
+
+$InstURL = "$Env:CI_JOB_URL/artifacts/browse/release-builds/openflexure-ev-win.exe"
+
+$NuSpec = @"
+<?xml version="1.0"?>
+<package xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
+  <metadata>
+    <id>$packageName</id>
+    <title>OpenFlexure eV</title>
+    <version>$Version</version>
+    <authors>OpenFlexure</authors>
+    <owners>Bath Open Instrumentation Group</owners>
+    <summary>OpenFlexure Microscope client</summary>
+    <description>An electron-based user client for the OpenFlexure Microscope Server</description>
+    <projectUrl>https://www.openflexure.org/</projectUrl>
+    <docsUrl>https://www.openflexure.org/projects/microscope/</docsUrl>
+    <bugTrackerUrl>https://gitlab.com/openflexure/openflexure-microscope-jsclient/issues</bugTrackerUrl>
+    <projectSourceUrl>https://gitlab.com/openflexure/openflexure-microscope-jsclient/</projectSourceUrl>
+    
+    <packageSourceUrl>https://gitlab.com/openflexure/openflexure-microscope-jsclient/</packageSourceUrl>
+    
+    <tags>openflexure microscope ev</tags>
+    <licenseUrl>https://gitlab.com/openflexure/openflexure-microscope-jsclient/raw/master/LICENSE</licenseUrl>
+    <requireLicenseAcceptance>false</requireLicenseAcceptance>
+    <iconUrl>https://gitlab.com/openflexure/openflexure-microscope-jsclient/raw/master/app/icons/png/512x512.png</iconUrl>
+  </metadata>
+  <files>
+    <file src="tools\**" target="tools" />
+  </files>
+</package>
+"@
+
+echo $NuSpec | Out-File -force -FilePath "$outpath\openflexure-ev.nuspec"
+
+$InstPS1 = "Install-ChocolateyPackage '$packageName' '$fileType' '$silentArgs' '$InstURL'"
+
+$toolspath = "$outpath\tools"
+If(!(test-path $toolspath))
+{
+  New-Item -ItemType Directory -Force -Path $toolspath
+}
+echo $InstPS1 | Out-File -force -FilePath "$toolspath\chocolateyInstall.ps1"
+
+choco pack --outputdirectory $outpath "$outpath\openflexure-ev.nuspec"