Add support for domain research endpoint

[juankuquintana]

Belongs to https://github.com/dnsimple/dnsimple-business/issues/2442
Fixes https://github.com/dnsimple/dnsimple-app/issues/33924

Add support for domain research endpoint

🔍 QA

• Run ./gradlew runDomainResearch

// add to build.gradle
task runDomainResearch(type: JavaExec) {
    group = 'application'
    mainClass = 'com.dnsimple.TestDomainResearch'
    classpath = sourceSets.main.runtimeClasspath
}

package com.dnsimple;

import com.dnsimple.data.DomainResearchStatus;
import com.dnsimple.response.SimpleResponse;

public final class TestDomainResearch {

    public static void main(String[] args) {
        String token = "dnsimpletest_a_FSYtfYn7p74jfPd3GBUUsnLoOXia8hkR";
        String apiBase = "http://api.localhost:5000";
        long accountId = 2;
        String domain = "example.com";

        Client client = new Client.Builder()
                .apiBase(apiBase)
                .accessToken(token)
                .build();

        SimpleResponse<DomainResearchStatus> response = client.domains.domainResearchStatus(accountId, domain);
        DomainResearchStatus data = response.getData();
        if (data != null) {
            System.out.println("Request ID: " + data.getRequestId());
            System.out.println("Domain: " + data.getDomain());
            System.out.println("Availability: " + data.getAvailability());
            System.out.println("Errors: " + data.getErrors());
        } else {
            System.out.println("Error: No data in response");
            System.exit(1);
        }
    }
}

📋 Deployment Pre/Post tasks

• PRE: Domain research endpoint is released in production
• POST: Create a release version https://github.com/dnsimple/dnsimple-java/blob/main/RELEASING.md

Deployment Verification

• QAd