MLE-24405 Refactor: Moved some OkHttp-specific classes

[rjrudin]

Trying to get as many okhttp3 imports into one package as possible, with the notable exception for now of OkHttpServices.

[Copilot]

Pull Request Overview

Refactors OkHttp-specific classes to consolidate them into a dedicated package. The PR moves authentication interceptor classes from the generic impl package to the more specific okhttp package to improve code organization and reduce scattered okhttp3 imports.

• Moved HTTPKerberosAuthInterceptor and HTTPSamlAuthInterceptor to okhttp package
• Updated imports in OkHttpUtil to reflect the package restructuring
• Removed unused import in FailedRequest class

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
OkHttpUtil.java	Removed imports for moved interceptor classes and unused Objects import
HTTPSamlAuthInterceptor.java	Moved to okhttp package and added RESTServices import
HTTPKerberosAuthInterceptor.java	Moved to okhttp package and added SSLUtil import
FailedRequest.java	Removed unused MediaType import

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