Rename deprecated texture info functions and add new ones.

[greggman]

This is a step to fixing the tests so they test all optional texture formats.

Note: I couldn't figure out how to share the code in validation_test.ts without bigger changes throught the code base. Maybe that can come in another PR.

The issue is, the rest of the code base expects that ValidationTest is a class which means you do this

function foo(t: ValidationTest) { ... }
foo(new ValidationTest());

Things like the Mixin pattern don't support this as the thing returned is at best a constructor but not a type. Hopefully this can be solved later.

Note that only format_info.ts, gpu_test.ts, test_config.ts, validation_test.ts
were edited directly. The rest are changed via VSCode's rename refactor functions.

Issue: #4181

[greggman]

ran with dawn.node just the webgpu:api,* branch. Same pass/fail/skip numbers before and after this change.

[kainino0x]

Things like the Mixin pattern don't support this as the thing returned is at best a constructor but not a type. Hopefully this can be solved later.

Might be able to do typeof new ValidationTest() / typeof new (SomeMixin(GPUTest))() or something but I'm not sure if that works