refactor: Fix typos in variable names

lib/logic/cubit/server_installation/server_installation_state.dart

@@ -49,11 +49,11 @@ abstract class ServerInstallationState extends Equatable {
   bool get isPrimaryUserFilled => rootUser != null;
   bool get isServerCreated => serverDetails != null;
 
-  bool get isFullyInitilized => _fulfilementList.every((final el) => el!);
+  bool get isFullyInitialized => _fulfillmentList.every((final el) => el!);
   ServerSetupProgress get progress => ServerSetupProgress
-      .values[_fulfilementList.where((final el) => el!).length];
+      .values[_fulfillmentList.where((final el) => el!).length];
 
-  int get porgressBar {
+  int get progressBar {
     if (progress.index < 6) {
       return progress.index;
     } else if (progress.index < 10) {
@@ -63,7 +63,7 @@ abstract class ServerInstallationState extends Equatable {
     }
   }
 
-  List<bool?> get _fulfilementList {
+  List<bool?> get _fulfillmentList {
     final List<bool> res = [
       isServerProviderApiKeyFilled,
       isServerTypeFilled,
@@ -118,7 +118,7 @@ class TimerState extends ServerInstallationNotFinished {
 enum ServerSetupProgress {
   nothingYet,
   serverProviderFilled,
-  servertTypeFilled,
+  serverTypeFilled,
   dnsProviderFilled,
   backblazeFilled,
   domainFilled,

lib/logic/models/price.dart

@@ -11,7 +11,7 @@ class Price {
 enum CurrencyType {
   eur,
   usd,
-  unkown,
+  unknown,
 }
 
 class Currency {

lib/ui/pages/setup/initializing/initializing.dart

@@ -112,7 +112,7 @@ class InitializingPage extends StatelessWidget {
                           'Server',
                           'Installation',
                         ],
-                        activeIndex: cubit.state.porgressBar,
+                        activeIndex: cubit.state.progressBar,
                       ),
                     ),
                   ),