Support GRPC for sending OTel traces

[alecsammon]

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• I could not find a solution in the existing issues, docs, nor discussions.
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Ory Network Project

No response

Describe your problem

We can only collect OTel traces via GRPC.
ory/x only supports sending traces via HTTP.

Describe your ideal solution

ory/x should accept an additional configuration allowing sending traces via GRPC instead of HTTP.

I have the start of the solution here: #784.
I'm happy to finish this PR if it's agreed to be the correct solution.

Workarounds or alternatives

We can look at adding a HTTP -> GRPC adapter - but would be complicated as this is the only part of our infrastructure that requires this.

Version

hydra:v2.2.0

Additional Context

No response