Add Gleam (#67)

dist/install-gleam.ps1

@@ -0,0 +1,19 @@
+param([Parameter(Mandatory=$true)][string]$VSN)
+
+$ErrorActionPreference="Stop"
+
+Set-Location $Env:RUNNER_TEMP
+
+$FILE_INPUT="gleam-${VSN}-windows-64bit.zip"
+$FILE_OUTPUT="gleam.zip"
+$DIR_FOR_BIN=".setup-beam/gleam/bin"
+
+$ProgressPreference="SilentlyContinue"
+Invoke-WebRequest "https://github.com/gleam-lang/gleam/releases/download/${VSN}/${FILE_INPUT}" -OutFile "$FILE_OUTPUT"
+$ProgressPreference="Continue"
+New-Item "$DIR_FOR_BIN" -ItemType Directory | Out-Null
+$ProgressPreference="SilentlyContinue"
+Expand-Archive -DestinationPath "${DIR_FOR_BIN}" -Path "${FILE_OUTPUT}"
+$ProgressPreference="Continue"
+Write-Output "Installed Gleam version follows"
+& "$DIR_FOR_BIN/gleam" "--version" | Write-Output