Support loading CaRT files. #1892

Job	Run time
windows / Test Windows	7m 14s
pyinstaller / Build on ubuntu-20.04	4m 39s
ci / Build	3m 2s
pyinstaller / Build on ubuntu-22.04	5m 18s
pyinstaller / Build on windows-2022	6m 19s
pyinstaller / Build on macos-12	8m 33s
pyinstaller / Build on macos-14	5m 53s
ci / Test (0)	1m 23s
ci / Test (1)	1m 1s
ci / Lint	1m 18s
ci / Test (2)	1m 50s
ci / Test (3)	1m 20s
ci / Test (4)	1m 11s
ci / Test (5)	1m 29s
ci / Test (6)	1m 56s
ci / Test (7)	1m 5s
ci / Test (8)	1m 9s
ci / Test (9)	1m 13s
ci / Publish Unit Tests Results	1s
pyinstaller / Test on ubuntu-20.04	54s
pyinstaller / Test on ubuntu-22.04	1m 2s
pyinstaller / Test on macos-12	1m 13s
pyinstaller / Test on windows-2022	53s
pyinstaller / Test on macos-14	46s
	1h 0m 42s

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