Support non GraphQL traces

[danstarns]

• OpenTelemetry Epic #8

Problem

The collector is only designed to accept traces that have all the appropriate attribute values attached by graphql-otel, see also:

• Standardize OTEL GraphQL Attributes #9

We do not counter for non-GraphQL OTEL traces, so people cannot get a fine-grained view of their GraphQL and then look further into OTEL-compliant tools they are using.

For example, if someone was using GraphQL Debugger and Prisma Tracing, they should be able to see the GraphQL traces as normal in the interface and then also see the Prisma traces displaying accordingly.

GraphQL Debugger should store non-recognized child spans in a trace group and then appropriately display them in the user interface.