Add connection timeout configuration to ConfigurationParameters

[konard]

Summary

This PR adds the ability to configure connectTimeout and readTimeout for HTTP connections on a per-request basis through ConfigurationParameters. This solves issue #41 where timeouts could only be set by overwriting the global static httpHelper instance.

Changes

• Add connectTimeout and readTimeout fields to ConfigurationParameters with getters/setters
• Add overloaded getHttpsURLConnection(URL url, Integer connectTimeout, Integer readTimeout) method in HttpHelper
• Pass timeout configuration through both OAuth1 and OAuth2 request flows in EmailageClient
• Update OAuth2Wrapper.doOAuth2Request() and getAccessToken() to accept timeout parameters
• Add unit tests for timeout configuration

Usage Example

ConfigurationParameters parameters = new ConfigurationParameters();
parameters.setUserEmail("user@example.com");
parameters.setAcccountToken("token");
parameters.setAccountSecret("secret");
parameters.setEnvironment(Enums.Environment.Sandbox);
parameters.setHashAlgorithm(Enums.SignatureMethod.HMAC_SHA256);
parameters.setResultFormat(Enums.Format.Json);

// New timeout configuration - per-request, no global state changes
parameters.setConnectTimeout(5000);  // 5 seconds
parameters.setReadTimeout(10000);    // 10 seconds

EmailageResponse result = EmailageClient.QueryEmail("test@example.com", parameters);

Test plan

• Unit tests verify timeout parameters are passed through the call chain
• Existing tests still pass (HttpHelperTest: 3/3 passing)
• Code compiles successfully

Note: Some pre-existing tests fail due to Java 21 incompatibility with JaCoCo 0.8.6 and PowerMock (module access restrictions). This is an environmental issue unrelated to these changes.

Fixes #41

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[konard]

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