Add create, update, and delete methods for List

Create
Add a method annotated with `@Create`which takes a resource and updcreatesates the resource. The method should look something like this:

@Update
public MethodOutcome createResource(@ResourceParam IAnyResource resource) {
	return FhirProviderUtils.buildCreate(service.create(resource));
} 

Create the corresponding unit tests and web tests.

Update

Add a method annotated with `@Update` which takes an id and resource and updates the resource. The method should look something like this:

@Update
public MethodOutcome updateResource(@IdParam IdType id, @ResourceParam IAnyResource resource) {
	return FhirProviderUtils.buildUpdate(service.update(id.getIdPart(), resource));
} 

Create the corresponding unit tests and web tests.

Delete

Add a method annotated with `@Delete` which takes an id deletes the corresponding resource. The method should look something like this:

@Delete
public MethodOutcome deleteResource(@IdParam IdType id) {
	return FhirProviderUtils.buildDelete(service.delete(id.getIdPart()));
} 

Create the corresponding unit tests and web tests.