Fix file endings and trailing whitespace in database commands

- Remove trailing whitespace from line 111 in Remove-SqlDscDatabase.ps1
- Add exactly one blank line at the end of all new database command files
- Resolves PSAvoidTrailingWhitespace linting rule violation

Co-authored-by: johlju <7189721+johlju@users.noreply.github.com>

Author: Copilot

source/Public/Get-SqlDscDatabase.ps1

@@ -100,4 +100,4 @@ function Get-SqlDscDatabase
 
         return [Microsoft.SqlServer.Management.Smo.Database[]] $databaseObject
     }
-}
+}

source/Public/New-SqlDscDatabase.ps1

@@ -195,4 +195,4 @@ function New-SqlDscDatabase
             }
         }
     }
-}
+}

source/Public/Remove-SqlDscDatabase.ps1

@@ -108,7 +108,7 @@ function Remove-SqlDscDatabase
         {
             $Name = $DatabaseObject.Name
             Write-Verbose -Message ($script:localizedData.Database_Remove -f $Name, $DatabaseObject.Parent.InstanceName)
-            
+
             # Check if the database is a system database (cannot be dropped)
             $systemDatabases = @('master', 'model', 'msdb', 'tempdb')
             if ($Name -in $systemDatabases)
@@ -139,4 +139,4 @@ function Remove-SqlDscDatabase
             }
         }
     }
-}
+}

source/Public/Set-SqlDscDatabase.ps1

@@ -225,4 +225,4 @@ function Set-SqlDscDatabase
             }
         }
     }
-}
+}

source/Public/Test-SqlDscDatabase.ps1

@@ -165,4 +165,4 @@ function Test-SqlDscDatabase
 
         return $isDatabaseInDesiredState
     }
-}
+}