feat: add AI configs support to terraform provider

[tracisiebel]

Summary

Adds support for LaunchDarkly AI Configs to the Terraform provider, including both resource and data source implementations. This required upgrading the API client from v17.1.0 to v17.2.0, which introduced breaking changes that affected existing code.

⚠️ Important Notes:

• No acceptance tests were added for AI configs - manual testing required
• AI Configs are currently in beta in the LaunchDarkly API
• Go version upgraded from 1.22.9 to 1.23.5

Changes

New Resources

• launchdarkly_ai_config resource with full CRUD operations
• launchdarkly_ai_config data source
• Auto-generated documentation for both

API Client Upgrade (v17.1.0 → v17.2.0)

Fixed breaking changes:

• Environments field changed from map to *map (pointer)
• IsActive field removed from MetricPost struct

Files Modified

• launchdarkly/resource_launchdarkly_ai_config.go (new): AI config resource implementation
• launchdarkly/data_source_launchdarkly_ai_config.go (new): AI config data source
• launchdarkly/feature_flag_environment_helper.go: Fixed Environments pointer dereference
• launchdarkly/resource_launchdarkly_metric.go: Removed IsActive field usage
• launchdarkly/data_source_launchdarkly_feature_flag_environment_test.go: Fixed test for Environments pointer
• launchdarkly/resource_launchdarkly_feature_flag_environment_test.go: Fixed test for Environments pointer
• launchdarkly/integration_configs_generated.go: Updated with full integration list from main branch

Human Review Checklist

Critical - No Tests:

• Manually verify AI config resource creation, read, update, and delete operations
• Test AI config data source retrieval
• Verify import functionality works correctly
• Test maintainer field handling (both member ID and team key)

API Client Upgrade:

• Verify all Environments field accesses handle the pointer correctly
• Confirm IsActive field removal doesn't break metric functionality
• Check if other resources are affected by v17.2.0 changes

AI Configs Specific:

• Verify if LD-API-Version: beta header is required for AI configs API calls (currently not set)
• Test maintainer union type handling (MaintainerMember vs AiConfigsMaintainerTeam)
• Confirm tags, description, and version fields work as expected

Other:

• Verify Go 1.23.5 upgrade is acceptable and doesn't cause issues
• Confirm integration_configs_generated.go changes don't break audit log subscriptions or flag triggers

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Devin Session: https://app.devin.ai/sessions/4ce205546ce54b55a0c511fed243dc6d
Requested by: @tracisiebel

[devin-ai-integration]

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