#713 - refactor: move database type

BudgetMasterServer/src/main/java/de/deadlocker8/budgetmaster/migration/DatabaseType.java → BudgetMasterServer/src/main/java/de/deadlocker8/budgetmaster/database/DatabaseType.java

-package de.deadlocker8.budgetmaster.migration;
+package de.deadlocker8.budgetmaster.database;
 
 public enum DatabaseType
 {

BudgetMasterServer/src/main/java/de/deadlocker8/budgetmaster/utils/DatabaseConfigurationProperties.java

 package de.deadlocker8.budgetmaster.utils;
 
-import de.deadlocker8.budgetmaster.migration.DatabaseType;
+import de.deadlocker8.budgetmaster.database.DatabaseType;
 import org.springframework.boot.context.properties.ConfigurationProperties;
 
 import javax.validation.constraints.Max;