Add OTel log support to Carnot plan protos and implement exec node support #2552

Job	Run time
env-protect-setup	5s
authorize	4s
get-dev-image / get-image	6s
clang-tidy	32m 15s
generate-matrix	24m 9s
code-coverage	0s
build-and-test (TSAN, nokvm, --config=tsan --compilation_mode=dbg, bazel_buildables_sanitizer, ba...	20m 4s
build-and-test (Clang debug, nokvm, --config=clang --compilation_mode=dbg, bazel_buildables_clang...	19m 57s
build-and-test (Go race detector, nokvm, --config=go_race --compilation_mode=opt, bazel_buildable...	15m 47s
build-and-test (Clang opt + UI, nokvm, --config=clang --compilation_mode=opt, bazel_buildables_cl...	24m 15s
build-and-test (ASAN, nokvm, --config=asan --compilation_mode=dbg, bazel_buildables_sanitizer, ba...	20m 28s
build-and-test (GCC opt, nokvm, --config=gcc --compilation_mode=opt, bazel_buildables_gcc_opt, ba...	21m 24s
build-and-test-status	4s
	2h 58m 38s

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