AY-6975 Consolidate retimes computation.

[robin-ynput]

Changelog Description

help resolve ynput/ayon-hiero#29
help resolve ynput/ayon-flame#28

• FreezeFrame does not work due to wong available media range boudary computation
• Negative speed is not always accurate
• TimeWrap is not properly computed
• LinearTimeWarp produce correct output clip (tried speed = 0.5 and speed = 2), retime information can be properly gathered from Nuke.
• [ ] Retiming is not properly applied on reviewable, will be handled in a separate PR if needed.`

Additional info

This needs to be tested alongside:

• More consolidations on Hiero OTIO exporter ayon-hiero#40 (hiero)
• More consolidations on Flame OTIO exporter ayon-flame#47 (flame)

Testing notes:

1. Run the automated tests
   .\tools\manage.ps1 run pytest .\tests\

[ynbot]

Task linked: AY-6975 Broken retiming calculation

[jakubjezek001]

Tested current dev and all is passing fine

===================================== 28 passed, 17 warnings in 1.11s =====================================

[iLLiCiTiT]

If time_scalar is int then this can be simplified to:

Suggested change

	frame_range = [media_in_trimmed]
	in_frame = media_in_trimmed + time_scalar
	while in_frame <= media_out_trimmed:
	frame_range.append(in_frame)
	in_frame += time_scalar
	frame_range = list(range(
	media_in_trimmed,
	media_out_trimmed + 1,
	time_scalar
	))

If is float then this is better.

[robin-ynput]

time_scalar might be float (unfortunately 😞)