[WGSL] Validate element types of vectors, matrices and textures

[tadeuzagallo]

0babce1

[WGSL] Validate element types of vectors, matrices and textures
https://bugs.webkit.org/show_bug.cgi?id=269379
rdar://122293433

Reviewed by Mike Wyrzykowski.

Validate that the element type of each of these type generators is valid according
to the spec:
- vectors can only contain scalar types
- matrices can only contain floating point types
- a texture's sampled type must be a concrete 32 bit scalar (i32, u32 or f32)

* Source/WebGPU/WGSL/TypeCheck.cpp:
(WGSL::TypeChecker::TypeChecker):
(WGSL::TypeChecker::allocateSimpleConstructor):

Canonical link: https://commits.webkit.org/274714@main

c235550

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[webkit-early-warning-system]

EWS run on current version of this PR (hash c235550)

Details

Misc	iOS, tvOS & watchOS	macOS	Linux	Windows
✅ 🧪 style	✅ 🛠 ios	✅ 🛠 mac	✅ 🛠 wpe	✅ 🛠 wincairo
	✅ 🛠 ios-sim	✅ 🛠 mac-AS-debug	✅ 🧪 wpe-wk2
✅ 🧪 webkitperl	✅ 🧪 ios-wk2	✅ 🧪 api-mac	✅ 🧪 api-wpe
	✅ 🧪 ios-wk2-wpt		✅ 🛠 gtk
	✅ 🧪 api-ios	✅ 🧪 mac-wk2	✅ 🧪 gtk-wk2
	✅ 🛠 tv	✅ 🧪 mac-AS-debug-wk2	✅ 🧪 api-gtk
	✅ 🛠 tv-sim
✅ 🛠 🧪 merge	✅ 🛠 watch
	✅ 🛠 watch-sim

[webkit-commit-queue]

Committed 274714@main (0babce1): https://commits.webkit.org/274714@main

Reviewed commits have been landed. Closing PR #24429 and removing active labels.