Feature/default duration setting (#7)

* Implemented Basic Duration Settings into AppSettings Model

* Implemented Basic Duration Settings into AppSettings Model

* Created Duration Settings Widget and Started using ViewModel in HomeSettingsTab

* Updated Version Number

lib/models/app_settings.dart

@@ -13,19 +13,26 @@ class AppSettings {
     this.duration,
   });
 
-  factory AppSettings.defaults() =>
-      AppSettings(doneColor: Colors.green, leftColor: Colors.red);
+  factory AppSettings.defaults() => AppSettings(
+        doneColor: Colors.green,
+        leftColor: Colors.red,
+        duration: Duration(days: 365),
+      );
 
   AppSettings copyWith({
     Color doneColor,
     Color leftColor,
+    Duration duration,
   }) =>
       AppSettings(
-          doneColor: doneColor ?? this.doneColor,
-          leftColor: leftColor ?? this.leftColor);
+        doneColor: doneColor ?? this.doneColor,
+        leftColor: leftColor ?? this.leftColor,
+        duration: duration ?? this.duration,
+      );
 
   @override
-  int get hashCode => doneColor.hashCode ^ leftColor.hashCode;
+  int get hashCode =>
+      doneColor.hashCode ^ leftColor.hashCode ^ duration.hashCode;
 
   @override
   bool operator ==(Object other) =>
@@ -33,12 +40,15 @@ class AppSettings {
       other is AppSettings &&
           runtimeType == other.runtimeType &&
           doneColor == other.doneColor &&
-          leftColor == other.leftColor;
+          leftColor == other.leftColor &&
+          duration == other.duration;
 
   AppSettingsEntity toEntity() =>
-      AppSettingsEntity(doneColor.value, leftColor.value);
+      AppSettingsEntity(doneColor.value, leftColor.value, duration.inDays);
 
   static AppSettings fromEntity(AppSettingsEntity entity) => AppSettings(
-      doneColor: Color(entity.doneColorValue),
-      leftColor: Color(entity.leftColorValue));
+        doneColor: Color(entity.doneColorValue),
+        leftColor: Color(entity.leftColorValue),
+        duration: Duration(days: entity.durationDays),
+      );
 }

lib/models/time_progress.dart

@@ -19,6 +19,9 @@ class TimeProgress {
         "Initial Name", DateTime(thisYear - 1), DateTime(thisYear + 1));
   }
 
+  factory TimeProgress.defaultFromDuration(Duration duration) =>
+      TimeProgress("", DateTime.now(), DateTime.now().add(duration));
+
   TimeProgress copyWith(
           {String id, String name, DateTime startTime, DateTime endTime}) =>
       TimeProgress(