Blender Git Loki

LANPR: Removed camera references in RenderBuffer. Safe for thread ops.

LANPR: Locking parent thread when loading scenes into lanpr.

LANPR: Renderbuffer creation changed to re-init.

LANPR: Const qualifiers for some of the functions

Always write LANPR data if set

Gerneral rule of thumb: Don't delete user data without permission.
Data-blocks are a whole different and difficult story. Users may have
disabled just for a render, reloading the file shouldn't make their
settings go lost.

Fix crash on disabling collection LANPR

Also:
* Avoid duplicated copy code (copy code performed already and wouldn't actually run)
* Cleanup freeing

Fix NULL-ptr mem-copy

LANPR: Build option CMakeLists add LANPR.

Fix wrong dereferences

Address some minor warnings

Run clang-format on all changed files

LANPR: Collection visibility flags should be visible in all engines.

LANPR: Fixing CollectionLANRP file r/w.

LANPR: Use pointer to save collection LANPR config.

Merge remote-tracking branch 'origin/master' into temp-lanpr-review

Merge remote-tracking branch 'origin/master' into temp-lanpr-review

LANPR: Remove LANPR_LineLayerComponent struct as it's no more used.

LANPR: Fix chain point count error.

LANPR: CMake option in the RNA.

Merge remote-tracking branch 'origin/master' into temp-lanpr-review