Rename Jaeger exporter target

[lalitb]

Changes

The otel-cpp targets are prefixed with opentelemetry, and exporters with opentelemetry_exporter. Renamed jaeger exporter target to be consistent with that. This is how the final targets look like:

$ ls -ltr /usr/local/lib/libopentelemetry_*
-rw-r--r-- 1 root root 3852102 Jul 21 20:21 /usr/local/lib/libopentelemetry_exporter_zipkin_trace.a
-rw-r--r-- 1 root root 3542158 Jul 21 21:15 /usr/local/lib/libopentelemetry_exporter_jaeger_trace.a
-rw-r--r-- 1 root root 4948736 Jul 21 21:26 /usr/local/lib/libopentelemetry_proto.a
-rw-r--r-- 1 root root    3116 Jul 21 21:27 /usr/local/lib/libopentelemetry_version.a
-rw-r--r-- 1 root root   67056 Jul 21 21:27 /usr/local/lib/libopentelemetry_common.a
-rw-r--r-- 1 root root 2894382 Jul 21 21:27 /usr/local/lib/libopentelemetry_resources.a
-rw-r--r-- 1 root root 3556204 Jul 21 21:27 /usr/local/lib/libopentelemetry_trace.a
-rw-r--r-- 1 root root 2805392 Jul 21 21:27 /usr/local/lib/libopentelemetry_exporter_ostream_span.a
-rw-r--r-- 1 root root  498176 Jul 21 21:27 /usr/local/lib/libopentelemetry_otlp_recordable.a
-rw-r--r-- 1 root root 6829052 Jul 21 21:28 /usr/local/lib/libopentelemetry_zpages.a
-rw-r--r-- 1 root root 1159478 Jul 21 21:28 /usr/local/lib/libopentelemetry_exporter_otlp_http.a
-rw-r--r-- 1 root root  259864 Jul 21 21:28 /usr/local/lib/libopentelemetry_exporter_otlp_grpc.a

For significant contributions please make sure you have completed the following items:

• CHANGELOG.md updated for non-trivial changes
• Unit tests have been added
• Changes in public API reviewed

[codecov]

Codecov Report

Merging #918 (b14d585) into main (db8289f) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #918   +/-   ##
=======================================
  Coverage   95.44%   95.44%           
=======================================
  Files         158      158           
  Lines        6749     6749           
=======================================
  Hits         6441     6441           
  Misses        308      308