[kotlin-spring][server] fix spring boot configuration conflict

[medliii]

I generated two folders with two different specs, which caused a conflict with the autowiring of the DefaultExceptionHandler class. To resolve this, I set different configuration names.

Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanDefinitionStoreException: Failed to parse configuration class [xdc.core.api.XdcCoreApiApplication]; nested exception is org.springframework.context.annotation.ConflictingBeanDefinitionException: Annotation-specified bean name 'defaultExceptionHandler' for bean class [xdc.external.apis.DefaultExceptionHandler] conflicts with existing, non-compatible bean definition of same name and class [xdc.tools.apis.DefaultExceptionHandler]

@dr4ke616 @karismann @Zomzog @andrewemery @4brunu @yutaka0m @stefankoppier

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[medliii]

rebase master

[wing328]

thanks for the PR

i don't think this will break existing use cases from the first glance so let's give it a try

in case it does, we will need to add an option for rollback