types: Add `std` feature #76

Job	Run time
Test - 1.63.0 toolchain (minimal)	2m 27s
Docs - stable toolchain (recent)	46s
Test - 1.63.0 toolchain (recent)	2m 29s
Prepare	2s
Integration tests - stable toolchain (28_0)	55s
Test - stable toolchain (minimal)	48s
Integration tests - stable toolchain (27_1)	48s
Test - stable toolchain (recent)	47s
Verify - stable toolchain	17s
Integration tests - stable toolchain (27_0)	1m 23s
Integration tests - stable toolchain (26_2)	55s
Integration tests - stable toolchain (26_1)	1m 2s
Integration tests - stable toolchain (26_0)	1m 17s
Integration tests - stable toolchain (25_2)	48s
Integration tests - stable toolchain (24_2)	50s
Integration tests - stable toolchain (23_2)	49s
Integration tests - stable toolchain (22_1)	1m 16s
Integration tests - stable toolchain (0_21_2)	1m 21s
Integration tests - stable toolchain (0_20_2)	1m 9s
Integration tests - stable toolchain (0_19_1)	56s
Integration tests - stable toolchain (0_18_1)	1m 43s
Integration tests - stable toolchain (0_17_1)	1m 45s
Format - nightly toolchain	10s
Lint - nightly toolchain (recent)	39s
Docs - nightly toolchain (recent)	48s
Test - nightly toolchain (minimal)	55s
Test - nightly toolchain (recent)	50s
	27m 55s

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