deprecation(opentelemetry-jaeger): Add deprecation notice. #4273

Job	Run time
docs	1m 43s
cargo-deny	23s
lint	1m 34s
external-types (opentelemetry)	58s
external-types (opentelemetry-sdk)	1m 13s
msrv	3m 46s
non-default-examples (opentelemetry-otlp/examples/basic-otlp)	45s
test (stable)	2m 52s
coverage	2m 59s
test (beta)	3m 3s
	19m 16s

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