deprecation(opentelemetry-jaeger): Add deprecation notice. #4271

Job	Run time
coverage	3m 7s
cargo-deny	24s
docs	1m 41s
external-types (opentelemetry)	1m 1s
lint	1m 34s
external-types (opentelemetry-sdk)	1m 11s
msrv	3m 40s
non-default-examples (opentelemetry-otlp/examples/basic-otlp)	39s
test (stable)	3m 28s
test (beta)	3m 9s
	19m 54s

Provide feedback