feat: Allow generation of a server pack by uploading it to the webservice.

...a/de/griefed/serverpackcreator/ApplicationProperties.java

...va/de/griefed/serverpackcreator/ConfigurationHandler.java

.../main/java/de/griefed/serverpackcreator/DefaultFiles.java

backend/main/java/de/griefed/serverpackcreator/Main.java

...ain/java/de/griefed/serverpackcreator/MainSpringBoot.java

.../java/de/griefed/serverpackcreator/ServerPackHandler.java

...main/java/de/griefed/serverpackcreator/VersionLister.java

...efed/serverpackcreator/curseforge/CurseCreateModpack.java

...erpackcreator/spring/ApplicationPropertiesController.java

...iefed/serverpackcreator/spring/CustomErrorController.java

...riefed/serverpackcreator/spring/NotificationResponse.java

.../de/griefed/serverpackcreator/spring/RouteController.java

...n/java/de/griefed/serverpackcreator/spring/Schedules.java

.../griefed/serverpackcreator/spring/VersionsController.java

.../serverpackcreator/spring/curseforge/CurseController.java

...fed/serverpackcreator/spring/curseforge/CurseService.java

...erpackcreator/spring/curseforge/GenerateCurseProject.java

...serverpackcreator/spring/curseforge/ScanCurseProject.java

...erpackcreator/spring/serverpack/ServerPackController.java

.../serverpackcreator/spring/serverpack/ServerPackModel.java