companyName should be filled in if it is not assigned in parameter (#…

…3293)

@freddydk Added filling in companyName no matter if it is added as
parameter in Publish-PerTenantExtensionApps.ps1. Empty companyName could
give issues, so in my opinion it should be not empty. Before the change
if someone don't add the parameter then the next line of code:
`Write-Host "Company '$companyName' has id $companyId"`
is missing companyName.

Co-authored-by: Marek Busse <marek.busse@cepheo.com>

Saas/Publish-PerTenantExtensionApps.ps1

@@ -88,6 +88,9 @@ try {
             throw "No company $companyName"
         }
         $companyId = $company.id
+        if ($companyName -eq "") {
+            $companyName = $company.name
+        }
         Write-Host "Company '$companyName' has id $companyId"
 
         Write-Host "$automationApiUrl/companies($companyId)/extensions"