ObjectStore WASM32 Support

[tustvold]

This is a high-level tracking ticket, it needs someone motivated to pick it up and flesh it out further

Is your feature request related to a problem or challenge? Please describe what you are trying to do.

Currently object_store doesn't have a good story for WASM32

Describe the solution you'd like

Describe alternatives you've considered

Additional context

• Support 32-bit Architectures / Replace usize with u64 #5351
• Decouple ObjectStore from Reqwest / Generic HTTP Client Support #6056
• Run object_store tests (on CI) with WASM build/runtime arrow-rs-object-store#26

[XiangpengHao]

Another item I can think of is to add a wasm runner that actually execute the test. (we currently only make sure it builds)
Related: #6961

[alamb]

Another item I can think of is to add a wasm runner that actually execute the test. (we currently only make sure it builds) Related: #6961

Thanks -- I filed apache/arrow-rs-object-store#26 and added it to this ticket's list

[alamb]

🎉