feat(instrumentation): implementation of Writer opentelemetry-instrumentation-writer custom instrumentation

packages/opentelemetry-instrumentation-writer/.flake8

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+[flake8]
+exclude =
+	.git,
+	__pycache__,
+	build,
+	dist,
+	.tox,
+	venv,
+	.venv,
+	.pytest_cache
+max-line-length = 120

packages/opentelemetry-instrumentation-writer/.python-version

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+3.12.5

packages/opentelemetry-instrumentation-writer/README.md

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+# OpenTelemetry Writer Instrumentation
+
+<a href="https://pypi.org/project/opentelemetry-instrumentation-writer/">
+    <img src="https://badge.fury.io/py/opentelemetry-instrumentation-writer.svg">
+</a>
+
+This library allows tracing calls to any of Writer's endpoints sent with the official [Writer Python Library](https://github.com/writer/writer-python).
+
+## Installation
+
+```bash
+pip install opentelemetry-instrumentation-writer
+```
+
+## Example usage
+
+```python
+from opentelemetry.instrumentation.writer import WriterInstrumentor
+
+WriterInstrumentor().instrument()
+```
+
+## Privacy
+
+**By default, this instrumentation logs prompts, completions, and embeddings to span attributes**. This gives you a clear visibility into how your LLM application is working, and can make it easy to debug and evaluate the quality of the outputs.
+
+However, you may want to disable this logging for privacy reasons, as they may contain highly sensitive data from your users. You may also simply want to reduce the size of your traces.
+
+To disable logging, set the `TRACELOOP_TRACE_CONTENT` environment variable to `false`.
+
+```bash
+TRACELOOP_TRACE_CONTENT=false
+```