feat(logging): cloudwatch logging plugin to implement logging plugin interface #1303

Job	Run time
test / test-dart-vm (3.0.1)	1m 25s
test / test-dart-vm (stable)	1m 43s
dart2js_test / test-dart-2js (3.0.1, chrome)	4m 30s
ddc_test / test-dart-ddc (3.0.1, chrome)	2m 9s
native_test / test-dart-native (macos-latest)	2m 0s
dart2js_test / test-dart-2js (3.0.1, firefox)	4m 6s
ddc_test / test-dart-ddc (3.0.1, firefox)	2m 22s
native_test / test-dart-native (windows-latest)	3m 15s
dart2js_test / test-dart-2js (stable, chrome)	4m 0s
ddc_test / test-dart-ddc (stable, chrome)	2m 8s
dart2js_test / test-dart-2js (stable, firefox)	3m 40s
ddc_test / test-dart-ddc (stable, firefox)	2m 16s
	33m 34s

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