Add support to install sqlsrv and pdo_sqlsrv from GitHub releases

src/scripts/extensions/sqlsrv.ps1

@@ -0,0 +1,69 @@
+# Function to get sqlsrv extension version.
+Function Get-SqlsrvReleaseVersion() {
+  if ($version -le '7.2') {
+    # Use the releases from PECL for these versions
+    return null;
+  } elseif($version -eq '7.3') {
+    return '5.9.0'
+  } elseif ($version -eq '7.4') {
+    return '5.10.1'
+  } else {
+    return 'latest'
+  }
+}
+
+# Function to get sqlsrv extension release URL.
+Function Get-SqlsrvReleaseUrl()
+{
+  $extensionVersion = Get-SqlsrvReleaseVersion
+  if($extensionVersion) {
+    $repo = "$github/microsoft/msphpsql"
+    if($extensionVersion -eq 'latest') {
+      return "$repo/releases/latest/download/Windows-$version.zip"
+    } else {
+      return "$repo/releases/download/v$extensionVersion/Windows-$version.zip"
+    }
+  }
+}
+
+# Function to add sqlsrv extension from GitHub.
+Function Add-SqlsrvFromGithub()
+{
+  Param (
+    [Parameter(Position = 0, Mandatory = $true)]
+    [ValidateNotNull()]
+    [string]
+    $extension
+  )
+  $zipUrl = SqlsrvReleaseUrl
+  if($zipUrl) {
+    $nts = if (!$installed.ThreadSafe) { "nts" } else { "ts" }
+    $noDotVersion = $version.replace('.', '')
+    $extensionFilePath = "Windows-$version\$arch\php_${extension}_${noDotVersion}_${nts}.dll"
+    Get-File -Url $zipUrl -OutFile $ENV:RUNNER_TOOL_CACHE\sqlsrv.zip > $null 2>&1
+    Expand-Archive -Path $ENV:RUNNER_TOOL_CACHE\sqlsrv.zip -DestinationPath $ENV:RUNNER_TOOL_CACHE\sqlsrv -Force > $null 2>&1
+    Copy-Item -Path "$ENV:RUNNER_TOOL_CACHE\sqlsrv\$extensionFilePath" -Destination "$ext_dir\php_$extension.dll"
+    Enable-PhpExtension -Extension $extension -Path $php_dir
+  }
+}
+
+# Function to add sqlsrv extension.
+Function Add-Sqlsrv() {
+  Param (
+    [Parameter(Position = 0, Mandatory = $true)]
+    [ValidateNotNull()]
+    [string]
+    $extension
+  )
+  $status = 'Enabled'
+  if (Test-Path $ext_dir\php_$extension.dll) {
+    Enable-PhpExtension -Extension $extension -Path $php_dir
+  } else {
+    Add-SqlsrvFromGithub $extension >$null 2>&1
+    if (-not(Test-Extension $extension)) {
+      Add-Extension $extension >$null 2>&1
+    }
+    $status = 'Installed and enabled'
+  }
+  Add-ExtensionLog $extension $status
+}