PointCache: improve performance and compression, always compress

Point Caches (used by particle system, cloth, boids etc.) are now
always compressed, uzing zstd coupled with lossless data filtering.

- This is both smaller cache files _and_ faster than the old
  "Heavy" compression mode,
- And smaller data files and same or slightly faster speed than
  using no compression at all,
- There was not much difference between compression levels once
  data filtering got added, so option to pick them was removed.
- So there's no downside to just always using the compression,
  which makes for a simpler UI.
- RNA change: removes PointCache.compression property.

More details and cache size / performance numbers in the PR.

Pull Request: https://projects.blender.org/blender/blender/pulls/144356

scripts/modules/rna_manual_reference.py

@@ -2649,7 +2649,6 @@ url_manual_mapping = (
     ("bpy.types.object.visible_diffuse*", "render/cycles/object_settings/object_data.html#bpy-types-object-visible-diffuse"),
     ("bpy.types.objectsolverconstraint*", "animation/constraints/motion_tracking/object_solver.html#bpy-types-objectsolverconstraint"),
     ("bpy.types.particlesystemmodifier*", "physics/particles/index.html#bpy-types-particlesystemmodifier"),
-    ("bpy.types.pointcache.compression*", "physics/baking.html#bpy-types-pointcache-compression"),
     ("bpy.types.rendersettings.threads*", "render/cycles/render_settings/performance.html#bpy-types-rendersettings-threads"),
     ("bpy.types.scenedisplay.render_aa*", "render/workbench/sampling.html#bpy-types-scenedisplay-render-aa"),
     ("bpy.types.sceneeevee.motion_blur*", "render/eevee/render_settings/motion_blur.html#bpy-types-sceneeevee-motion-blur"),