[wip] Add Apache HTTP Server status OpenTelemetry input package

[perk]

This package implements an Apache input using the OpenTelemetry Collector's Apache Receiver, following the pattern established in PR #15739

Key features:

• Type: integration with otelcol input (not content package)
• Configurable collection interval, endpoint
• Comprehensive field definitions for container metrics
• Full documentation and test policy

[elasticmachine]

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