(platform): Progress on MacOS Build Support (#406)

* (new): [MacOS] Add LunaSea icon
* (new): [Scaffold] Use LunaScaffold across application
* (tweak): [theme]: Add hover colour to theme
* (fix): [Platform] Add platform checks and platform availability checks to Firebase Analytics & IAPs
* (fix): [MacOS] Ensure all deployment targets are 10.12 (Sierra)
* (fix): [MacOS] Correctly set the application name's capitalization
* (chore): Updated packages

lib/modules/nzbget/routes/history.dart

@@ -33,8 +33,8 @@ class _State extends State<NZBGetHistory> with AutomaticKeepAliveClientMixin, Lu
     @override
     Widget build(BuildContext context) {
         super.build(context);
-        return Scaffold(
-            key: _scaffoldKey,
+        return  LunaScaffold(
+            scaffoldKey: _scaffoldKey,
             body: _body(),
             appBar: _appBar(),
         );

lib/modules/nzbget/routes/queue.dart

@@ -35,8 +35,8 @@ class _State extends State<NZBGetQueue> with TickerProviderStateMixin, Automatic
     @override
     Widget build(BuildContext context) {
         super.build(context);
-        return Scaffold(
-            key: _scaffoldKey,
+        return  LunaScaffold(
+            scaffoldKey: _scaffoldKey,
             body: _body,
             floatingActionButton: context.watch<NZBGetState>().error
                 ? null

lib/modules/nzbget/routes/statistics.dart

@@ -45,8 +45,8 @@ class _State extends State<NZBGetStatistics> with LunaScrollControllerMixin {
     }
 
     @override
-    Widget build(BuildContext context) => Scaffold(
-        key: _scaffoldKey,
+    Widget build(BuildContext context) =>  LunaScaffold(
+        scaffoldKey: _scaffoldKey,
         appBar: _appBar,
         body: _body,
     );