* Stop generating otlptrace/internal and deprecate
* Remove the tracetransform templates
They are no longer used.
* Add change stub to changelog
* Add PR number to changelog
* Add internaltest templates
* Generate internaltest using gotmpl
* Generate the sdk/internal/internaltest pkg
* Use sdk/internal/internaltest in sdk module
* Generate exporters/jaeger/internal/internaltest pkg
* Use exporters/jaeger/internal/internaltest in jaeger exporter
* Generate the exporters/zipkin/internal/internaltest pkg
* Use local internaltest in zipkin exporter
* Fix import path name in trace test
* Upgrade all use of semconv to v1.21.0
* Add change to changelog
* Add AIX and ZOS OS support
* Upgrade semconv for merged changes
---------
Co-authored-by: Robert Pająk <pellared@hotmail.com>
* Add shared otlpmetric templates
* Generate otlpmetricgrpc/internal with gotmpl
* Use local internal in otlpmetricgrpc
* Add decoupling change to changelog