feat (lls_alert): add titleStyle and subtitleStyle to LLSAlertOptions. Story #1

lib/src/components/alert/lls_alert.dart

@@ -150,10 +150,12 @@ class _LLSAlertDialogState extends State<LLSAlertDialog> with SingleTickerProvid
      if (_options!.title != null) {
       listOfChildren.add(Padding(
         padding: EdgeInsets.only(top: 24.0),
+        child: Center(
           child: Text(
             _options!.title!,
             style: _options!.titleStyle,
           ),
+        ),
       ));
     }
 
@@ -231,8 +233,7 @@ class _LLSAlertDialogState extends State<LLSAlertDialog> with SingleTickerProvid
                 child: Padding(
                   padding: EdgeInsets.fromLTRB(0.0, 20.0, 0.0, 20.0),
                   child: Column(
-                    mainAxisAlignment: MainAxisAlignment.center,
-                    crossAxisAlignment: CrossAxisAlignment.center,
+                    mainAxisSize: MainAxisSize.min,
                     children: listOfChildren,
                   ),
                 )),