Plugins [Experimental] Alternative Futa

• Now adds a storable marker that other plugins can use to detect it.
• Geometry modified to address some issues/gaps exposed by testing with ClothSim.
  • This might affect existing looks. If you have issues please let me know!
• Fixed distortion of pelvis mesh on reload/settings change
• Morphs zeroed on disable.

• Added penis material options as a trigger receiver
  • Will show up in the atom's trigger receivers as something like plugin#0_Stopper.AlternativeFutaPenisMaterials
• Auto-sets tesselation on pelvis and penis (if tess-enabled shader is used)
• Removing plugin zeroes morphs

Big thanks to everyone that's been flagging bugs and to everyone else for bearing with me. Update 22 had a lot of changes under the hood that made rare issues happen more reliably. I'll keep working through them as we find them.

• Improvements to collider sync after loading
• Better tesselation on initial load
  • This reduces (but does not eliminate) the small gap between the pelvis and male gens
  • You'll still need to load one of HuntingSuccubus' tesselation or subsurface scattering plugins to fix it
• Improvements to race conditions between reloading and skin vertex updates
• Fixed issue where successive reloads may alter the skin
• Stability fixes for repeated reloading of skin and plugin

• Fixed issue with skin not reloading in some scenarios.

• Refactored a lot of the initialization code.
  • A lot more of it is done synchronously and should hopefully result in fewer race conditions.
  • Might also break things. Let me know!
• No longer adds male genital morphs to the female morph UI.
  • Should also no longer throw "Could not find morph" errors when loading a scene.
• Now auto-enables 'use male morphs on female'
  • It will also zero out all male morphs if the setting wasn't previously set. Otherwise the 'default' male morphs would mess up the model during general use.
• Added a new morph "AltFuta Pelvis Smooth v1" that blends the gens a little better.
  • It's just a combination of built-in morphs, so it's far from perfect.
  • Works best with a Z offset of -0.0085 or so
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• Other small tweaks that I can't remember.

• Fixed bug in latest update that cause penis physics to break

• Fixed bug where testicle controls weren't enabled

• Added some fixes for AltFutas in SubScenes.
  • Thanks to @WeebUVR for flagging! Should hopefully now work in his insane scenes.

• Brought back the option to hide the male pelvis.
  • Note: this turns off any pinning or other geometry changes.
• Merged the material options for the pelvis and penis into one.
  • If anyone has a good reason to keep them separate let me know. Otherwise it just seems redundant.

• Fixed issue where FPS drops after loading the plugin and before character UI is loaded.