Move is_true and is_false to algorithm sub-package #873

Job	Run time
ci / Build	3m 25s
macos / Test macOS	29s
windows / Test Windows	47s
ci / Test (0)	6m 58s
ci / Lint	56s
ci / Test (1)	7m 2s
ci / Test (2)	4m 43s
ci / Test (3)	3m 40s
ci / Test (4)	6m 53s
ci / Test (5)	5m 23s
ci / Test (6)	8m 57s
ci / Test (7)	7m 10s
ci / Test (8)	5m 59s
ci / Test (9)	10m 6s
ci / Publish Unit Tests Results	1s
	1h 12m 29s

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