[AO-20302] Add minimal SolarWinds exporter

[goatskin9844699]

This PR introduces the first iteration of the SolarWinds exporter. The functionality introduced in this PR enables the OTel-based Python agent to report data to the AppOptics backend.

Changes introduced

• added C-Library (otel-oboe) as extension to custom distro module
• automatic conversion of OTel-span data to AO event data
  • this conversion is WIP, currently only an entry and exit event is created from the OTel span
  • the conversion needs to be extend such that all Otel attributes (corresponding to AO KVs) and OTel events are reported as well as part of the trace
• automatic reporting of gathered instrumentation data to AO backend
• added developer tools (such as Makefile and build docker container) for easier build of custom distro package

Note that the Otel-span data to AO-event data introduced in this PR is not complete but this is only the bare minimum to create traces in the AO-backend which mainly creates AO start and end events.