Add Integer/Boolean Sanitizer

Author: Kwstubbs

go/ql/lib/semmle/go/security/SqlInjectionCustomizations.qll

@@ -25,6 +25,15 @@ module SqlInjection {
    */
   abstract class Sanitizer extends DataFlow::Node { }
 
+  /**
+   * A numeric- or boolean-typed node, considered a sanitizer for sql injection.
+   */
+  class NumericOrBooleanSanitizer extends Sanitizer {
+    NumericOrBooleanSanitizer() {
+      this.getType() instanceof NumericType or this.getType() instanceof BoolType
+    }
+  }
+
   /**
    * DEPRECATED: Use `Sanitizer` instead.
    *