Add OpenTelemetry and Spandex tracing connectors#129

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mruoss wants to merge 7 commits intodevelopfrom

Commits on Feb 21, 2022

add open_telemetry tracer
Michael Ruoss
committed
add spandex telemetry span tracer
Michael Ruoss
committed
dialyzer
Michael Ruoss
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deps and dialyzer
Michael Ruoss
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credo
Michael Ruoss
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doc
Michael Ruoss
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only create module if deps loaded
Michael Ruoss
committed