Cleanup examples and prepare them to be used on landing page #3017

Job	Run time
Static Analyze (locked, 8.1, ubuntu-latest)	54s
Tests (locked, 8.1, ubuntu-latest)	1m 42s
Tests (locked, 8.2, ubuntu-latest)	1m 26s
Tests (locked, 8.3, ubuntu-latest)	1m 31s
Tests (lowest, 8.1, ubuntu-latest)	1m 36s
Tests (lowest, 8.2, ubuntu-latest)	1m 33s
Tests (lowest, 8.3, ubuntu-latest)	1m 43s
Tests (highest, 8.1, ubuntu-latest)	2m 11s
Tests (highest, 8.2, ubuntu-latest)	1m 28s
Tests (highest, 8.3, ubuntu-latest)	1m 29s
	15m 33s

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