Swift package for OTLP exporter for traces, metrics, logs

[alolita]

See package at https://swiftpackageindex.com/swift-otel/swift-otel

Documentation at https://swiftpackageindex.com/swift-otel/swift-otel/main/documentation/otel

GitHub repo: https://github.com/swift-otel/swift-otel

Background Info: https://github.com/simonjbeaumont/swift-otel/blob/sb/public-api-proposal/docs/public-api-for-1.0.md

This package should be evaluated for OTel spec compatibility. It would be great to understand differences in this implementation versus the official OpenTelemetry Swift library. Also it would be useful to understand the use cases where this exporter can be leveraged and provide documentation for users.