refactor: fix remaining lint warnings and deprecated APIs

- Fix deprecated @ignore in json_serializable models (appState, yourLocation)
- Fix empty catch blocks in compassMapPlugin, globalFiresBottomStats, locationUtils
- Fix no_logic_in_create_state in firesApp, markdownPage, slider
- Fix use_build_context_synchronously in fireAlert
- Fix only_throw_errors in firesApi (8 instances)
- Exclude generated .g.dart files from analysis
- Update deprecated nullable: false to @JsonSerializable()

Build: APK generated successfully, 0 errors, 0 warnings

lib/markdownPage.dart

@@ -18,18 +18,24 @@ abstract class MarkdownPage extends StatefulWidget {
   final String route;
 
   @override
-  _MarkdownPageState createState() =>
-      _MarkdownPageState(title: title, file: file, route: route);
+  _MarkdownPageState createState() => _MarkdownPageState();
 }
 
 class _MarkdownPageState extends State<MarkdownPage> {
-  _MarkdownPageState(
-      {required this.title, required this.file, required this.route});
-  final String title;
-  final String route;
-  final Future<String> file;
+  _MarkdownPageState();
+  late final String title;
+  late final String route;
+  late final Future<String> file;
   String pageData = '';
 
+  @override
+  void initState() {
+    super.initState();
+    title = widget.title;
+    route = widget.route;
+    file = widget.file;
+  }
+
   @override
   Widget build(BuildContext context) {
     file.then((String fileSync) {