Add support for batch data processing in Salesforce connector about ballerina-integrator HOT 4 CLOSED

import sfdc46;

string epUrl = "https://<REGION>.salesforce.com";

sfdc46:SalesforceConfiguration sfConfig = {
    baseUrl: epUrl,
    clientConfig: {
        accessToken: ACCESS_TOKEN,
        refreshConfig: {
            clientId: CLIENT_ID,
            clientSecret: CLIENT_SECRET,
            refreshToken: REFRESH_TOKEN,
            refreshUrl: "https://login.salesforce.com/services/oauth2/token"
        }
    }
};

// Create salesforce client.
sfdc46:Client sfClient = new(sfConfig);
// Create salesforce bulk client.
sfdc46:SalesforceBulkClient sfBulkClient = sfClient->createSalesforceBulkClient();

// Create bulk JSON uploader object. This will create a job to upload JSON contacts as batches.
sfdc46:JsonInsertOperator | sfdc46:SalesforceError jsonInsertOperator = sfBulkClient->createJsonInsertOperator("Contact");

// Contacts to be inserted.
json contacts = [
    {
        description: "Created from Bulk API",
        FirstName: "Morne",
        LastName: "Morkel",
        Title: "SE",
        Phone: "0442226670",
        Email: "[email protected]",
        My_External_Id__c: "201"
    },
    {
        description: "Created from Bulk API",
        FirstName: "Andi",
        LastName: "Flower",
        Title: "SE",
        Phone: "0442216170",
        Email: "[email protected]",
        My_External_Id__c: "202"
    }
];

// Upload json as a batch.
sfdc46:Batch | sfdc46:SalesforceError batchDetails = jsonInsertOperator->upload(contacts);

// Get details of first batch.
sfdc46:Batch | sfdc46:SalesforceError batchInfo = jsonInsertOperator->getBatchInfo(BatchID);

// Get batch request details.
json | sfdc46:SalesforceError batchRequestDetails = jsonInsertOperator->getBatchRequest(BatchID);

// Get batch results.
json | sfdc46:SalesforceError batchResults = jsonInsertOperator->getBatchResults(BatchID);

// Get job details.
sfdc46:Job | sfdc46:SalesforceError jobDetails = jsonInsertOperator->getJobInfo();

// Close the job.
sfdc46:Job | sfdc46:SalesforceError jobClosedDetails = jsonInsertOperator->closeJob();

// Abort the job.
sfdc46:Job | sfdc46:SalesforceError jobAbortDetails = jsonInsertOperator->abortJob();

// Get details about all batches of this job.
sfdc46:BatchInfo | sfdc46:SalesforceError allBatchesInfo = jsonInsertOperator->getAllBatches();