fix: trailing nullcols hardcoded sql

Author: yajra

README.md

@@ -35,7 +35,7 @@ $loader->inFile(database_path('files/employees.csv'))
         ],
         terminatedBy: ',',
         enclosedBy: '"',
-        trailing: null
+        trailing: true
     )
     ->disk('local')
     ->execute();

src/SQLLoader.php

@@ -73,7 +73,7 @@ public function into(
         array $columns,
         ?string $terminatedBy = ',',
         ?string $enclosedBy = '"',
-        ?string $trailing = null,
+        bool $trailing = false,
         array $formatOptions = []
     ): static {
         $this->tables[] = new TableDefinition($table, $columns, $terminatedBy, $enclosedBy, $trailing, $formatOptions);

src/TableDefinition.php

@@ -11,7 +11,7 @@ public function __construct(
         public array $columns,
         public ?string $terminatedBy = null,
         public ?string $enclosedBy = null,
-        public ?string $trailing = null,
+        public bool $trailing = false,
         public array $formatOptions = []
     ) {
     }
@@ -29,7 +29,7 @@ public function __toString(): string
         }
 
         if ($this->trailing) {
-            $sql .= $this->trailing.PHP_EOL;
+            $sql .= 'TRAILING NULLCOLS'.PHP_EOL;
         }
 
         if ($this->formatOptions) {