Add RCT1 colour preset for Observation Tower Pole (#22361) #268

Job	Run time
Lint Commit Message	0s
Check changelog formatting	5s
Check code formatting	44s
g2.dat	9s
Ubuntu Linux (AppImage, x86_64)	1m 37s
Ubuntu Linux (jammy, debug, [http, network, flac, vorbis OpenGL] disabled) using clang	1m 12s
Ubuntu Linux (debug) using clang, coverage enabled	5m 32s
Android	2m 34s
Ubuntu Linux (Docker)	0s
Ubuntu Linux (jammy, x86_64, portable)	2m 19s
macOS (x64) using CMake	2m 35s
Windows (win32)	11m 11s
Debian Linux (bullseye, x86_64, portable)	1m 57s
macOS (arm64) using CMake	1m 32s
Windows (x64)	13m 10s
Windows (win32) using mingw	1m 14s
Ubuntu Linux (jammy, i686, portable)	2m 14s
Windows (arm64)	12m 29s
macOS universal app bundle	42s
	1h 1m 16s

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