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()

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lib/models/yourLocation.dart

@@ -5,7 +5,7 @@ import '../objectIdUtils.dart';
 
 part 'yourLocation.g.dart';
 
-@JsonSerializable(nullable: false)
+@JsonSerializable()
 class YourLocation {
   YourLocation(
       {required this.id,