Add support for nether vines v2

[ZacSharp]

Directly based on #4111. This is a crazy long lived branch, but somehow still merges cleanly.

• Most movements explicitly refuse to start on normal vines or ladders. Now they also refuse to start on nether vines.
• MovementFall now knows that nether vines reset fall damage, so Baritone can climb down on them
• MovementPillar and MovementTraverse now press the jump button instead of walking into an adjacent block
  • Traversing on vines/ladders is much less janky
  • Climbing up unsupported vines is possible
  • It can climb up mixed vines/ladders without getting stuck against the bottom face of a ladder
• allowVines now applies to nether vines as well, including the unreliability

Would really like if someone else could also try breaking this. I don't trust myself to find the edge case regressions I missed.

[ZacSharp]

"scorbett123 and others added 8 commits 3 years ago"

That's one commit created three years ago and seven created today. GitHub sure knows how to not be misleading.