Feat: Added powershell script for installing zvm in windows

install.ps1

@@ -0,0 +1,79 @@
+
+function Install-ZVM {
+    param(
+        [string]$urlSuffix
+    );
+
+    $ZVMRoot = "${Home}\.zvm"
+    $ZVMBin = mkdir -Force "${ZVMRoot}\bin"
+    $Target = $urlSuffix
+    $URL = "https://github.com/tristanisham/zvm/releases/latest/download/$urlSuffix"
+    $ZipPath = "${ZVMBin}\$Target"
+
+    $null = mkdir -Force $ZVMBin
+    Remove-Item -Force $ZipPath -ErrorAction SilentlyContinue
+    curl.exe "-#SfLo" "$ZipPath" "$URL" 
+    if ($LASTEXITCODE -ne 0) {
+        Write-Output "Install Failed - could not download $URL"
+        Write-Output "The command 'curl.exe $URL -o $ZipPath' exited with code ${LASTEXITCODE}`n"
+        exit 1
+    }
+    if (!(Test-Path $ZipPath)) {
+        Write-Output "Install Failed - could not download $URL"
+        Write-Output "The file '$ZipPath' does not exist. Did an antivirus delete it?`n"
+        exit 1
+    }
+    $UnzippedPath = $Target.Substring(0, $Target.Length - 4)
+    try {
+        $lastProgressPreference = $global:ProgressPreference
+        $global:ProgressPreference = 'SilentlyContinue';
+        Expand-Archive "$ZipPath" "$ZVMBin" -Force
+        $global:ProgressPreference = $lastProgressPreference
+        if (!(Test-Path "${ZVMBin}\$UnzippedPath\zvm.exe")) {
+            throw "The file '${ZVMBin}\$UnzippedPath\zvm.exe' does not exist. Download is corrupt / Antivirus intercepted?`n"
+        }
+    }
+    catch {
+        Write-Output "Install Failed - could not unzip $ZipPath"
+        Write-Error $_
+        exit 1
+    }
+    Remove-Item "${ZVMBin}\zvm.exe" -ErrorAction SilentlyContinue
+    Move-Item "${ZVMBin}\$UnzippedPath\zvm.exe" "${ZVMBin}\zvm.exe" -Force
+
+    Remove-Item "${ZVMBin}\$Target" -Recurse -Force
+    Remove-Item ${ZVMBin}\$UnzippedPath -Force
+
+    $null = "$(& "${ZVMBin}\zvm.exe")"
+    if ($LASTEXITCODE -eq 1073741795) {
+        # STATUS_ILLEGAL_INSTRUCTION
+        Write-Output "Install Failed - zvm.exe is not compatible with your CPU.`n"
+        exit 1
+    }
+    if ($LASTEXITCODE -ne 0) {
+        Write-Output "Install Failed - could not verify zvm.exe"
+        Write-Output "The command '${ZVMBin}\zvm.exe' exited with code ${LASTEXITCODE}`n"
+        exit 1
+    }
+
+    $C_RESET = [char]27 + "[0m"
+    $C_GREEN = [char]27 + "[1;32m"
+
+    Write-Output "${C_GREEN}ZVM${DisplayVersion} was installed successfully!${C_RESET}"
+    Write-Output "The binary is located at ${ZVMBin}\zvm.exe`n"
+
+    $User = [System.EnvironmentVariableTarget]::User
+    $Path = [System.Environment]::GetEnvironmentVariable('Path', $User) -split ';'
+    if ($Path -notcontains $ZVMBin) {
+        $Path += $ZVMBin
+        [System.Environment]::SetEnvironmentVariable('Path', $Path -join ';', $User)
+    }
+    if ($env:PATH -notcontains ";${ZVMBin}") {
+        $env:PATH = "${env:Path};${ZVMBin}"
+    }
+    Write-Output "To get started, restart your terminal/editor, then type `"zvm`"`n"
+}
+
+
+$PROCESSOR_ARCH = $env:PROCESSOR_ARCHITECTURE.ToLower()
+Install-ZVM "zvm-windows-$PROCESSOR_ARCH.zip"