chore(ci): restore deleted scripts.

scripts/GetLatestCommitSHA.ps1

@@ -0,0 +1,62 @@
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License.
+
+<#
+.Synopsis
+    Gets the latest commit SHA for the repository.
+
+.Description
+    Uses the GitHub API and the owner name, the repository name, and the branch name
+    to get the latest commit SHAand set its value to an environment variable named
+    LATEST_COMMIT_SHA in an Azure DevOps release environment.
+
+.Parameter owner
+    Specifies the owner of the repo.
+
+.Parameter repo
+    Specifies the name of the repository.
+
+.Parameter branchName
+    Specifies the target branch name. The default value is 'master'.
+#>
+
+Param(
+    [string]$owner,
+    [string]$repo,
+    [string]$branchName = "master"
+)
+
+if ([string]::IsNullOrEmpty($owner)) {
+    Write-Error "owner cannot be empty."
+    EXIT 1
+}
+
+if ([string]::IsNullOrEmpty($repo)) {
+    Write-Error "repo cannot be empty."
+    EXIT 1
+}
+
+Write-Host "Getting the latest commit SHA for $($branchName):" -ForegroundColor Magenta
+
+$latestCommitUrl = "https://api.github.com/repos/$($owner)/$($repo)/commits/$($branchName)"
+
+Write-Host "Getting latest commit with '$($latestCommitUrl)'" -ForegroundColor Blue
+$latestCommitData = Invoke-RestMethod -Uri $latestCommitUrl -Method Get
+
+if ($latestCommitData.Count -eq 0) {
+    Write-Host "Unable to get latest commit with '$($latestCommitUrl)'" -ForegroundColor Red
+    EXIT 1;
+}
+
+if ([string]::IsNullOrEmpty($latestCommitData.sha)) {
+    Write-Host "SHA is not present in the latest commit that is fetched" -ForegroundColor Red
+    Write-Host "Latest Commit Data:" -ForegroundColor Cyan
+    Write-Host -Object $latestCommitData -ForegroundColor Cyan
+    EXIT 1;
+}
+
+Write-Host "Latest Commit SHA is '$($latestCommitData.sha)'" -ForegroundColor Green
+
+Write-Host "##vso[task.setvariable variable=LATEST_COMMIT_SHA]$($latestCommitData.sha)"
+
+Write-Host "Updated the LATEST_COMMIT_SHA environment variable with the latest commit SHA." -ForegroundColor Green

scripts/GetNugetPackageVersion.ps1

@@ -0,0 +1,40 @@
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License.
+
+<#
+.Synopsis
+    Get the NuGet package version.
+
+.Description
+    Get the NuGet package version and write the package version to an environment
+    variable named VERSION_STRING in the Azure DevOps release environment.
+    VERSION_STRING is used to name a tag for setting a GitHub release. This
+    script assumes that the NuGet package has been named with correct version number.
+
+.Parameter packageDirPath
+    Specifies the fully qualified path to the NuGet package directory.
+#>
+
+Param(
+    [string]$packageDirPath
+)
+
+Write-Host "Get the NuGet package version and set it in the global variable: VERSION_STRING" -ForegroundColor Magenta
+
+$nugetPackageName = (Get-ChildItem (Join-Path $packageDirPath *.nupkg) -Exclude *.symbols.nupkg).Name
+
+Write-Host "Found NuGet package: $nugetPackageName" -ForegroundColor Magenta
+$packageVersionRegex = "Microsoft\.Graph\.Beta\.([0-9]+\.[0-9]+\.[0-9]+-\w+)\.nupkg"
+
+## Extracts the package version from nupkg file name.
+if ($nugetPackageName -match $packageVersionRegex)
+{
+    $packageVersion = $Matches[1]
+    Write-Host "##vso[task.setvariable variable=VERSION_STRING]$($packageVersion)";
+    Write-Host "Updated the VERSION_STRING environment variable with the package version value '$packageVersion'." -ForegroundColor Green
+}
+else
+{
+    Write-Host "Regular expression used in extracting the package version is: $packageVersionRegex"
+    Write-Error "We can't extract package version from the string"
+}

scripts/ValidateUpdatedNugetVersion.ps1

@@ -0,0 +1,69 @@
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License.
+
+<#
+.Synopsis
+    Gets the latest production release version of the specified NuGet package.
+
+.Description
+    Gets the NuGet package version of latest production release and compares the
+    version to the version set in the specified project file. If they match, this
+    script will fail and indicate that the version needs to be updated.
+
+.Parameter packageName
+    Specifies the package name of the package. For example, 'microsoft.kiota.abstractions'
+    is a valid package name.
+
+.Parameter projectPath
+    Specifies the path to the project file.
+#>
+
+Param(
+    [parameter(Mandatory = $true)]
+    [string]$packageName,
+
+    [parameter(Mandatory = $true)]
+    [string]$projectPath
+)
+
+[xml]$xmlDoc = Get-Content $projectPath
+
+# Assumption: VersionPrefix is set in the first property group.
+$versionPrefixString = $xmlDoc.Project.PropertyGroup[0].VersionPrefix
+if($xmlDoc.Project.PropertyGroup[0].VersionSuffix){
+    $versionPrefixString = $versionPrefixString + "-"  + $xmlDoc.Project.PropertyGroup[0].VersionSuffix
+}
+
+
+# System.Version, get the version prefix.
+$currentProjectVersion = [System.Management.Automation.SemanticVersion]"$versionPrefixString"
+
+# API is case-sensitive
+$packageName = $packageName.ToLower()
+$url = "https://api.nuget.org/v3/registration5-gz-semver2/$packageName/index.json"
+
+# Call the NuGet API for the package and get the current published version.
+Try {
+    $nugetIndex = Invoke-RestMethod -Uri $url -Method Get
+}
+Catch {
+    if ($_.ErrorDetails.Message && $_.ErrorDetails.Message.Contains("The specified blob does not exist.")) {
+        Write-Host "No package exists. You will probably be publishing $packageName for the first time."
+        Exit # exit gracefully
+    }
+
+    Write-Host $_
+    Exit 1
+}
+
+$currentPublishedVersion = [System.Management.Automation.SemanticVersion]$nugetIndex.items[$nugetIndex.items.Count-1].upper
+
+# Validate that the version number has been updated.
+if ($currentProjectVersion -le $currentPublishedVersion) {
+
+    Write-Error "The current published version number, $currentPublishedVersion, and the version number `
+               in the csproj file, $currentProjectVersion, match. You must increment the version"
+}
+else {
+    Write-Host "Validated that the version has been updated from $currentPublishedVersion to $currentProjectVersion" -ForegroundColor Green
+}