Add configurable maximum retry attempts for API requests

[arjundcunha]

What changes are proposed in this pull request?

Introduces a new maxRetries configuration option that allows users to override the default retry limit of 4 attempts. This provides greater flexibility for different use cases and network conditions. This is also a feature request here: #289

Changes:

• Add maxRetries field to DatabricksConfig with DATABRICKS_MAX_RETRIES
  environment variable support
• Update ApiClient to respect configured maxRetries value
• Add Builder.withMaxRetries() method for programmatic configuration
• Include comprehensive test coverage for both programmatic and
  environment variable configuration

Usage:
config.setMaxRetries(10)
or
export DATABRICKS_MAX_RETRIES=10

How is this tested?

Unit tests have been added.

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Inputs:

• PR number: 522
• Commit SHA: 8e70f89f502785725c30f111ca8bccaa45cb4d2a

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[renaudhartert-db]

From offline discussion: we are addressing the problem by providing an option to disable retries in this PR #523