Environment: Refactor code for readability + more

- Makes all boolean setters/getters consistent.
- Fixes bug where `glow_hdr_bleed_scale` was not used.
- Split CameraEffects to their own source file.
- Reorder all Environment method and properties declarations,
  definitions and bindings to be consistent with each other
  and with the order of property bindings.
- Bind missing enum values added with SDFGI.
- Remove unused SDFGI enhance_ssr boolean.
- Sync doc changes after SDFGI merge and other misc changes.

scene/3d/camera_3d.cpp

@@ -35,6 +35,7 @@
 #include "core/math/camera_matrix.h"
 #include "scene/resources/material.h"
 #include "scene/resources/surface_tool.h"
+
 void Camera3D::_update_audio_listener_state() {
 }