Change type of `GraphicsOptions::bloom_intensity` to `ZeroOne<f32>`. #820

Job	Run time
incremental-mutants	0s
lint (stable)	3m 30s
deny	45s
lint (nightly)	5m 15s
build (ubuntu, stable, locked, true)	10m 23s
miri	2m 7s
lint (beta)	4m 57s
build (windows, stable, locked, false)	38m 25s
build (macos, stable, locked, false)	9m 38s
build (ubuntu, nightly, locked, false)	20m 26s
no_std	56s
build (ubuntu, beta, locked, false)	13m 6s
build (ubuntu, stable, latest, false)	15m 10s
build (ubuntu, stable, minimal, false)	1m 13s
fuzz	15m 57s
features	23m 11s
deploy	7s
	2h 45m 6s

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