Add sentry processing

[n0str]

Message structure

A Sentry envelope is typically a structured format consisting of multiple JSON parts concatenated together. It starts with a header, followed by one or more items separated by newlines, with each item having its own header and body.

Structure of a Sentry Envelope

1. Envelope Header (JSON): Describes the envelope metadata (e.g., dsn, event_id).
2. Item Header (JSON): Precedes each item, describing its type (e.g., event, transaction) and optional metadata like length.
3. Item Payload (Optional JSON): The actual data of the item.

Example Sentry Envelope:

{"type":"event", "length":30}
{"key":"value"}
{"type":"attachment", "length":14}
"sample-attachment"