Bug: Multi language support

[VaclavElias]

At the time we created BuildDocs.ps1 only manual folder was translated to JP and so all PowerShell code logic was about copying translated files from the manual\*.md folder + index.md.

function Build-NonEnglishDoc needs to be updated:

• Now that we have multiple folders we should update the logic. It might be enough just copy everything from jp folder to the _temp folder
• $files = Get-ChildItem "$langFolder/$($Settings.ManualFolderName)/*.md" -Recurse -Force probably, we need to make an array where we list folders to process, which are all folders except: template, example, includes folder.

So this below should be probably in the loop, processing selected folders [manual, tutorials,community-resources,..] or one loop and $files should contain all those files from listed folders for marking.

        # Get all previously copied en files from the selected language folder
        $files = Get-ChildItem "$langFolder/$($Settings.ManualFolderName)/*.md" -Recurse -Force

        Write-Host "Start write files:"

        # Mark files as not translated if they are not a toc.md file
        foreach ($file in $files)
        {
            if($file.ToString().Contains("toc.md")) {
                continue;
            }

            $data = Get-Content $file -Encoding UTF8
            for ($i = 0; $i -lt $data.Length; $i++)
            {
                $line = $data[$i];
                if ($line.length -le 0)
                {
                    Write-Host $file

                    $data[$i]="> [!WARNING]`r`n> " + $SelectedLanguage.NotTranslatedMessage + "`r`n"

                    $data | Out-File -Encoding UTF8 $file

                    break
                }
            }
        }

This part probably just need to copy everything from jp folder instead doing it individually.

$indexFile = $Settings.IndexFileName

        # overwrite en manual page with translated manual page
        if (Test-Path ($SelectedLanguage.Code + "/" + $indexFile)) {
            Copy-Item ($SelectedLanguage.Code + "/" + $indexFile) $langFolder -Force
        }
        else {
            Write-Warning "$($SelectedLanguage.Code)/"+ $indexFile +" not found. English version will be used."
        }

        # overwrite en manual pages with translated manual pages
        if (Test-Path ($SelectedLanguage.Code + "/" + $Settings.ManualFolderName)) {
            Copy-Item ($SelectedLanguage.Code + "/" + $Settings.ManualFolderName) -Recurse -Destination $langFolder -Force
        }
        else {
            Write-Warning "$($SelectedLanguage.Code)/$($Settings.ManualFolderName) not found."
        }