Combine resource, waitable, waitable-set, and error-context tables

[dicej]

#11127 adds runtime support for the Component Model async ABI, including support for the waitable, waitable-set, and error-context handle types. Currently, those live in separate tables from resources, but per WebAssembly/component-model#513, the spec says they should all be put into a single table per instance, so we need to update the implementation to match.

Note that the aforementioned PR also adds a new runtime/component/concurrent/states.rs file to the wasmtime crate which duplicates and modifies the runtime/vm/component/resources.rs file. We should be able to deduplicate those files as part of this work.