log: Add ValueFromAttribute and KeyValueFromAttribute (#6180) #15727

Job	Run time
test-coverage	46s
test-bench	27s
test-concurrent-safe	4m 21s
lint	2m 24s
test-race	2m 2s
compatibility-test (1.23.0, ubuntu-latest, 386)	28s
compatibility-test (1.23.0, ubuntu-latest, amd64)	1m 11s
compatibility-test (1.23.0, otel-linux-arm64, arm64)	28s
compatibility-test (1.23.0, macos-13, amd64)	1m 2s
compatibility-test (1.23.0, macos-latest, arm64)	38s
compatibility-test (1.23.0, windows-latest, 386)	3m 55s
compatibility-test (1.23.0, windows-latest, amd64)	1m 30s
compatibility-test (~1.22.5, ubuntu-latest, 386)	20s
compatibility-test (~1.22.5, ubuntu-latest, amd64)	1m 8s
compatibility-test (~1.22.5, otel-linux-arm64, arm64)	27s
compatibility-test (~1.22.5, macos-13, amd64)	1m 8s
compatibility-test (~1.22.5, macos-latest, arm64)	32s
compatibility-test (~1.22.5, windows-latest, 386)	2m 18s
compatibility-test (~1.22.5, windows-latest, amd64)	2m 30s
codecov	7s
test-compatibility	1s
	27m 43s

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