Refactoring: API for defining new frame sources #26

Job	Run time
list-examples	3s
alpha.json5	1m 34s
audio-transition.json5	2m 2s
audio-volume.json5	1m 29s
audio1.json5	1m 40s
audio2.json5	2m 29s
audio3.json5	1m 23s
audioLoop.json5	1m 32s
commonFeatures.json5	2m 11s
contain-blur.json5	1m 49s
customCanvas.ts	1m 26s
customFabric.ts	1m 36s
customOutputArgs.json5	1m 30s
fabricImagePostProcessing.ts	1m 34s
gl.json5	2m 20s
gradients.json5	2m 49s
image.json5	1m 33s
imageOverlay.json5	1m 53s
kenBurns.json5	2m 57s
mosaic.json5	1m 58s
newsTitle.json5	1m 37s
ph.json5	2m 21s
pip.json5	1m 35s
position.json5	2m 42s
remote.json5	1m 34s
renderSingleFrame.ts	1m 48s
single.json5	1m 52s
slideInText.json5	2m 16s
smartFit.json5	1m 34s
speedTest.json5	1m 33s
subtitle.json5	1m 32s
timeoutTest.json5	2m 5s
transitionEasing.json5	2m 17s
transparentGradient.json5	1m 50s
videos.json5	2m 9s
videos2.json5	1m 28s
vignette.json5	1m 23s
visibleFromUntil.json5	1m 53s
	1h 9m 17s

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