Document type inconsistencies between OpenTelemetry and Sentry

[antonpirker]

A collection of differences in types between Sentry and OpenTelementry.

• span.set_data()/otel_span.set_attribute()

  • Sentry span.set_data(key, value): value allows Any type, so everything including dicts.
  • Opentelementry otel_span.set_attribute(key, value) (which Sentry set_data uses under the hood): value allows a non-null string, boolean, floating point value, integer, or an array of these values. (NO dicts!)