feat: explain how to start PostgreSQL (#4909)

images/linux/scripts/SoftwareReport/SoftwareReport.Databases.psm1

@@ -33,6 +33,21 @@ function Get-SqlPackageVersion {
     return "SqlPackage $sqlPackageVersion"
 }
 
+function Build-PostgreSqlSection {
+    $output = ""
+
+    $output += New-MDHeader "PostgreSQL" -Level 4
+    $output += New-MDList -Style Unordered -Lines @(
+        (Get-PostgreSqlVersion ),
+        "PostgreSQL Server (user:postgres)"
+    )
+    $output += New-MDCode -Lines @(
+        "PostgreSQL service is disabled by default. Use the following command as a part of your job to start the service: 'sudo systemctl start postgresql.service'"
+    )
+
+    return $output
+}
+
 function Build-MySQLSection {
     $output = ""