package name changes and fixes

ios/Classes/HolovoxFilamentPlugin.h

@@ -1,4 +0,0 @@
-#import <Flutter/Flutter.h>
-
-@interface HolovoxFilamentPlugin : NSObject<FlutterPlugin>
-@end

ios/Classes/PolyvoxFilamentPlugin.h

@@ -0,0 +1,4 @@
+#import <Flutter/Flutter.h>
+
+@interface PolyvoxFilamentPlugin : NSObject<FlutterPlugin>
+@end

ios/Classes/PolyvoxFilamentPlugin.mm

@@ -1,9 +1,9 @@
-#import "HolovoxFilamentPlugin.h"
-#import "filament/FilamentNativeViewFactory.h"
+#import "PolyvoxFilamentPlugin.h"
+#import "FilamentNativeViewFactory.h"
 
 FilamentNativeViewFactory* factory;
 
-@implementation HolovoxFilamentPlugin
+@implementation PolyvoxFilamentPlugin
 + (void)registerWithRegistrar:(NSObject<FlutterPluginRegistrar>*)registrar {
   factory =
       [[FilamentNativeViewFactory alloc] initWithRegistrar:registrar];