support pinch, double tap and rotation gestures on iOS #5372

Job	Run time
Run cargo-deny on Android	24s
Run cargo-deny on iOS	23s
Check formatting	11s
Run cargo-deny on Linux	22s
Test stable Windows 64bit MSVC	2m 49s
Run cargo-deny on macOS	21s
Test stable Windows 32bit MSVC	2m 36s
Run cargo-deny on Redox OS	21s
Test stable Windows 64bit GNU	1m 55s
Run cargo-deny on web	23s
Test stable Windows 32bit GNU	2m 19s
Run cargo-deny on Windows	25s
Test stable Linux 32bit	2m 39s
Test stable Linux 64bit	2m 24s
Test stable X11	2m 10s
Test stable Wayland	2m 9s
Test stable Android	53s
Test stable Redox OS	20s
Test stable macOS	2m 18s
Test stable iOS x86_64	1m 43s
Test stable iOS Aarch64	2m 38s
Test stable web	53s
Test nightly Windows 64bit MSVC	1m 44s
Test nightly Windows 32bit MSVC	1m 39s
Test nightly Windows 64bit GNU	3m 6s
Test nightly Windows 32bit GNU	2m 22s
Test nightly Linux 32bit	3m 35s
Test nightly Linux 64bit	2m 28s
Test nightly X11	2m 24s
Test nightly Wayland	2m 27s
Test nightly Android	1m 0s
Test nightly Redox OS	29s
Test nightly macOS	1m 50s
Test nightly iOS x86_64	1m 45s
Test nightly iOS Aarch64	1m 27s
Test nightly web	58s
Test 1.70.0 Windows 64bit MSVC	48s
Test 1.70.0 Windows 32bit MSVC	58s
Test 1.70.0 Windows 64bit GNU	1m 3s
Test 1.70.0 Windows 32bit GNU	1m 9s
Test 1.70.0 Linux 32bit	1m 16s
Test 1.70.0 Linux 64bit	1m 2s
Test 1.70.0 X11	51s
Test 1.70.0 Wayland	47s
Test 1.70.0 Redox OS	20s
Test 1.70.0 macOS	1m 3s
Test 1.70.0 iOS x86_64	58s
Test 1.70.0 iOS Aarch64	1m 10s
Test 1.70.0 web	39s
Test 1.70.0 Android	38s
Test nightly web Atomic	1m 17s
	1h 11m 49s

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