(RFC) Remove schema validation in `createBuffer`

I think we should remove schema validation in createBuffer. Reasons:

• Logic could be moved into a type-aware lint plugin
• Prevents users from creating helper functions that accept generic types

Example of a generic function that fails

import { type TgpuRoot } from 'typegpu';
import { arrayOf } from 'typegpu/data';

export function createInstanceBuffer<StructData extends d.WgslStruct>(
  root: TgpuRoot,
  struct: StructData,
  length: number,
) {
  const instanceBuffer = root
    // ❌ `d.WgslArray<StructData> is not assignable to `ValidateBufferSchema<d.WgslArray<StructData>>`
    .createBuffer(d.arrayOf(struct, length))
    // ❌ A very long error relating to usages
    .$usage('vertex', 'storage');

  const instanceLayout = tgpu.vertexLayout(
    (n) => arrayOf(struct, n),
    'instance',
  );
  return [instanceBuffer, instanceLayout] as const;
}

Start at the TypeScript createBuffer API and reproduce the generic createInstanceBuffer example from the issue. Trace the current schema and usage validation types, then determine the intended boundary for validation removal; this is done when generic buffer helpers type-check without the current validation errors and existing behavior remains covered.