VERSION 3.10: many new procedural textures and some other useful features/fixes

Complete changelog:
VERSION 3.10.2353 (14.04.2026):
- mandelbro3d:
- also added a "Pick Position"-position for light sources (SWAN-1147)
- fixed: hybrid fractals sometimes render different in preview than in hq/hq+ mode (SWAN-1157)
- fixed: Godot sees not the OIDN-executable under when Windows when added to PATH
variable (SWAN-1146)
- added new Mycelium-procedural-texture (SWAN-1148)
- added new Diffraction-procedural-texture (SWAN-1149)
- added new Tesselation-procedural-texture (SWAN-1150)
- added new Topographic-procedural-texture (SWAN-1151)
- added new Circuit-Trace-procedural-texture (SWAN-1152)
- added more example scenes for procedural textures (SWAN-1154)
- randomize Default Scene and add random procedural textures (SWAN-1156)

VERSION 3.9.2343 (14.04.2026):
- mandelbro3d:
- moved texture-controls of primitives to a separate tab (SWAN-1155)
- added buttons to copy texture parameters between different texture slots (SWAN-1122)
- added new Domain-Warp-procedural-texture (SWAN-1138)
- added new Soap-Bubble-procedural-texture (SWAN-1139)
- added new Supernova-procedural-texture (SWAN-1140)
- added new Penrose-Tiling-procedural-texture (SWAN-1141)
- added new Celtic-Knot-procedural-texture (SWAN-1142)
- added new Caustics-procedural-texture (SWAN-1143)
- added new Glitch-procedural-texture (SWAN-1144)
- added new Nebula-procedural-texture (SWAN-1145)

VERSION 3.8.2333 (14.04.2026):
- mandelbro3d:
- added new Reaction-Diffusion-procedural-texture (SWAN-1130)
- added new Agate-procedural-texture (SWAN-1131)
- added new Moire-procedural-texture (SWAN-1132)
- added new Mandelbrot-procedural-texture (SWAN-1133)
- added new Truchet-Tiles-procedural-texture (SWAN-1134)
- added new Lichtenberg-procedural-texture (SWAN-1135)
- added new Kaleidoscope-procedural-texture (SWAN-1136)
- added new Stained-Glass-procedural-texture (SWAN-1137)
- added short descriptions to procedural textures (SWAN-1153)

VERSION 3.7.2324 (14.04.2026):
- mandelbro3d:
- fixed: looped curves do not work with angular curves (rotation) (SWAN-1091)
- made parameters of procedural textures animatable (SWAN-1121)
- added new Cracks-procedural-texture (SWAN-1124)
- added new Hexagons-procedural-texture (SWAN-1125)
- added new Rust-procedural-texture (SWAN-1126)
- added new Scales-procedural-texture (SWAN-1127)
- added new Plasma-procedural-texture (SWAN-1128)
- re-focus the texture-drowdown when changing a texture in a texture slot (SWAN-1129)