Accept `Map<String, dynamic>` in `Hint` class #52

Job	Run time
android \| ubuntu-latest \| stable	1m 9s
cancel-previous-workflow	2s
android \| ubuntu-latest \| beta	1m 6s
linux \| ubuntu-latest \| stable	1m 26s
linux \| ubuntu-latest \| beta	1m 34s
ios \| macos-latest \| stable	2m 1s
macos \| macos-latest \| stable	1m 54s
windows \| windows-latest \| stable	2m 25s
windows \| windows-latest \| beta	2m 57s
analyze / analyze	1m 51s
analyze / cancel-previous-workflow	3s
analyze / package-analysis	1m 2s
	17m 30s

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