wayland: Add `WindowExtWayland::xdg_toplevel` #7279

Job	Run time
Run cargo-deny on Android	18s
Minimize JavaScript	9s
Run cargo-deny on iOS	18s
Check formatting	10s
Run cargo-deny on Linux	23s
Test stable Windows 64bit MSVC	3m 47s
Check for typos	8s
Test stable Windows 32bit MSVC	4m 40s
Run cargo-deny on macOS	19s
Test stable Windows 64bit GNU	4m 17s
Run cargo-deny on Redox OS	18s
Test stable Windows 32bit GNU	4m 44s
Run cargo-deny on web	20s
Test stable Linux 32bit	4m 2s
Run cargo-deny on Windows	18s
Test stable Linux 64bit	3m 49s
Test stable X11	3m 33s
Test stable Wayland	3m 52s
Test stable Android	3m 16s
Test stable Redox OS	2m 31s
Test stable macOS	3m 14s
Test stable iOS x86_64	3m 2s
Test stable iOS Aarch64	3m 0s
Test stable web	3m 29s
Test nightly Windows 64bit MSVC	1m 41s
Test nightly Windows 32bit MSVC	1m 39s
Test nightly Windows 64bit GNU	1m 54s
Test nightly Windows 32bit GNU	2m 21s
Test nightly Linux 32bit	4m 7s
Test nightly Linux 64bit	3m 43s
Test nightly X11	3m 35s
Test nightly Wayland	3m 36s
Test nightly Android	57s
Test nightly Redox OS	27s
Test nightly macOS	59s
Test nightly iOS x86_64	1m 3s
Test nightly iOS Aarch64	50s
Test nightly web	1m 13s
Test 1.70.0 Windows 64bit MSVC	3m 24s
Test 1.70.0 Windows 32bit MSVC	3m 22s
Test 1.70.0 Windows 64bit GNU	3m 42s
Test 1.70.0 Windows 32bit GNU	3m 46s
Test 1.70.0 Linux 32bit	3m 40s
Test 1.70.0 Linux 64bit	3m 16s
Test 1.70.0 X11	3m 4s
Test 1.70.0 Wayland	3m 1s
Test 1.70.0 Redox OS	18s
Test 1.70.0 macOS	2m 53s
Test 1.70.0 iOS x86_64	2m 44s
Test 1.70.0 iOS Aarch64	2m 45s
Test 1.70.0 web	3m 6s
Test 1.70.0 Android	2m 53s
Test nightly web Atomic	1m 28s
	2h 5m 24s

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