Refine $import, $export and $export-status operations

[prb112]

Refine $import, $export and $export-status operations

• confirm the multi-tenancy
• resolve TODO
• refactor to support DELETE operations
• push batch code down to the library for bulkdata and pull into the Operation

Reference - https://javaee.github.io/tutorial/batch-processing006.html#BCGCAHCB

 <dependency>
            <groupId>javax.batch</groupId>
            <artifactId>javax.batch-api</artifactId>
            <version>1.0.1</version>
        </dependency>


 JobOperator jobOperator = BatchRuntime.getJobOperator();
        jobOperator.start("FhirBulkExportChunkJob", toProperties(properties));


 private Properties toProperties(Map<String,String> props){
        Properties properties = new Properties();
        for(Entry<String, String> entry : props.entrySet()) {
            properties.put(entry.getKey(), entry.getValue());
        }
        
        return properties;
    }

[prb112]

per #67 and #69 - update the code.

[prb112]

linked to Custom operation should support more types being passed from URI #75

[prb112]

Linked the two together in ZenHub

[prb112]

Unfortunately, JobOperator was not an option.

[prb112]

I still refactored the code.

[prb112]

PR #633