Flow graph control flow blocks 2

[carolhmj]

Changes

• Add debounce and flip flop blocks
• About debounce: I'm not 100% sure the implementation should work this way, feedback is appreciated 🙂

Examples:

• #RKQX23#11: Debounce, only every 2 clicks on the sphere are registered
• #J1N2GP#7: Flip flop, click on the sphere to open and close the door

[bjsplat]

Please make sure to label your PR with "bug", "new feature" or "breaking change" label(s).
To prevent this PR from going to the changelog marked it with the "skip changelog" label.

[bjsplat]

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