[ENHANCEMENT] In-game Stress (Pico Mix) intro cutscene

[AbnormalPoof]

Closes FunkinCrew/Funkin#4423

This PR remakes the intro cutscene for Stress (Pico Mix) so it's now in-game instead of a video along with reformatting the whole song script whoops! Along with all the bells and whistles like skipping and whatnot.

The cutscene audio, due to it being one big audio file, has resyncing functionality with the help of a dummy texture atlas. This is honestly a kind of shitty way of doing it but it works. If you find a better way to resync please let me know!!!

Tested on HTML5 (Web) and desktop:

updated.cutscene.mp4

updated.stress.skipping.mp4

Additionally, changes were also made to the ending cutscene so the HUD now fades out along with the cutscene itself now being skippable!

skippable.stress.pico.ending.cutscene.mp4

NOTE: There are slight inaccuracies with the camera right now, I'll fix them up soon.

[Hundrec]

I might just have to review every line of this amazing PR...

[TechnikTil]

10/10
would recommend to @CrusherNotDrip

[Lasercar]

The changes... It's over 500,000 thousand!

@AbnormalPoof

Did you delete the cutscene video? That'd cut down on the size by quite a lot.

[trayfellow]

danm girl

[JackXson-Real]

Currently camera movements are a bit weird, the sprites have some noticeable black lines whenever they move, the skip keybind disables halfway through, and the beginning of the cutscene repeats. Definitely a good start, but needs a lot of improvements. I do like how the strumline fades out for the ending cutscene though, I hope they do that for every cutscene.

[AbnormalPoof]

Currently camera movements are a bit weird, the sprites have some noticeable black lines whenever they move, the skip keybind disables halfway through, and the beginning of the cutscene repeats. Definitely a good start, but needs a lot of improvements. I do like how the strumline fades out for the ending cutscene though, I hope they do that for every cutscene.

1. I'm working on it!!!!!!!!!!!!!!!!!!!!
2. This is a funkin bug
3. Fixed
4. This is because of the resync system which only exists because the cutscene audio is all one file and desyncs often because of stuttering!!!!!

[Hundrec]

I'd love to see a video of the cutscene repeating...

[AbnormalPoof]

Made some changes so now the camera is more accurate to the FLA

updated.cutscene.mp4

[Lasercar]

Closes FunkinCrew/Funkin#4960