feat(logging): cloudwatch logging plugin to implement logging plugin interface #414

Job	Run time
test / test-dart-vm (3.0.1)	1m 32s
test / test-dart-vm (stable)	1m 29s
native_test / test-dart-native (macos-latest)	2m 20s
dart2js_test / test-dart-2js (3.0.1, chrome)	4m 50s
ddc_test / test-dart-ddc (3.0.1, chrome)	2m 26s
native_test / test-dart-native (windows-latest)	1m 40s
dart2js_test / test-dart-2js (3.0.1, firefox)	4m 46s
ddc_test / test-dart-ddc (3.0.1, firefox)	2m 23s
dart2js_test / test-dart-2js (stable, chrome)	4m 32s
ddc_test / test-dart-ddc (stable, chrome)	2m 29s
dart2js_test / test-dart-2js (stable, firefox)	4m 19s
ddc_test / test-dart-ddc (stable, firefox)	2m 20s
	35m 6s

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