Add `otlploghttp` exporter skeleton #11468

Job	Run time
test-race	1m 52s
lint	1m 36s
test-bench	1m 2s
compatibility-test (~1.22.0, ubuntu-latest, 386)	18s
compatibility-test (~1.22.0, ubuntu-latest, amd64)	59s
test-coverage	1m 17s
compatibility-test (~1.22.0, macos-latest, amd64)	54s
compatibility-test (~1.22.0, windows-latest, 386)	3m 3s
compatibility-test (~1.22.0, windows-latest, amd64)	1m 43s
compatibility-test (~1.22.0, actuated-arm64-2cpu-8gb, arm64)	26s
compatibility-test (~1.21.3, ubuntu-latest, 386)	12s
compatibility-test (~1.21.3, ubuntu-latest, amd64)	1m 2s
compatibility-test (~1.21.3, macos-latest, amd64)	46s
compatibility-test (~1.21.3, windows-latest, 386)	2m 24s
compatibility-test (~1.21.3, windows-latest, amd64)	3m 23s
compatibility-test (~1.21.3, actuated-arm64-2cpu-8gb, arm64)	24s
test-compatibility	1s
	21m 22s

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