update all installed dotnet cli tools. If version number includes "preview", update latest preview release

update-latestdotnettools.ps1

function Get-NugetApiEndpoint{
    param(
        [string]$nugetUri
    )
    $response = invoke-RestMethod -Uri $nugetUri -Method Get -ContentType "application/json"
    $uri = $response.resources | Where-Object {$_.'@type' -eq 'SearchQueryService'} | Select-Object -ExpandProperty '@id' -First 1
    return $uri
}

function get-latestdotnetpackage {
    param (
        [string]$queryHost,
        [string]$packageName,
        [string]$currentVersion
    )
    $prerelease = 'false'
    if($currentVersion.Contains('-preview') -eq $true -or $currentVersion.Contains('-rc') -eq $true) {
        $prerelease ='true'
    }
    $queryUri = $queryHost + "?q=$packageName&prerelease=$prerelease&semVerLevel=2.0.0"
    $versions = Invoke-RestMethod $queryUri -Method Get -ContentType 'application/json'
    if($versions.data[0].version -gt $currentVersion){
        if($prerelease -eq 'true'){
            $prereleaseFlag = "--prerelease"
        }
        dotnet.exe tool update $packageName --global $prereleaseFlag
    }
}

function update-dotnettool {
    $queryHost = Get-NugetApiEndpoint -nugetUri 'https://api.nuget.org/v3/index.json'
    $lists = dotnet tool list --global | Select-Object -Skip 2
    foreach($list in $lists)
    {
        $tool = $list.Split(' ') | Where-Object {[string]::IsNullOrWhiteSpace($_) -ne $true}
        $packagename = $tool[0]
        $version = $tool[1]
        write-host "Checking $packagename  version:$version"
        get-latestdotnetpackage -queryHost $queryHost -packageName $packagename -currentVersion $version
    }
}