初回起動フラグ追加

utils/src/main/java/one/nem/lacerta/utils/impl/SharedPrefUtilsImpl.java

@@ -50,4 +50,14 @@ public class SharedPrefUtilsImpl implements SharedPrefUtils{
     public void setFeatureSwitchOverride(FeatureSwitchOverride featureSwitchOverride, boolean value) {
         getEditor().putBoolean(featureSwitchOverride.getKey(), value).apply();
     }
+
+    @Override
+    public boolean getIsFirstLaunch() {
+        return getSharedPreferences().getBoolean("isFirstLaunch", true);
+    }
+
+    @Override
+    public void setIsFirstLaunch(boolean value) {
+        getEditor().putBoolean("isFirstLaunch", value).apply();
+    }
 }

utils/src/main/java/one/nem/lacerta/utils/repository/SharedPrefUtils.java

@@ -19,4 +19,8 @@ public interface SharedPrefUtils {
     boolean getFeatureSwitchOverride(FeatureSwitchOverride featureSwitchOverride);
 
     void setFeatureSwitchOverride(FeatureSwitchOverride featureSwitchOverride, boolean value);
+
+    boolean getIsFirstLaunch();
+
+    void setIsFirstLaunch(boolean value);
 }