Update async API

[kylebarron]

Change list

• Rename AsyncParquetFile to ParquetFile
• Combine object-store reader and local file reader into single ParquetFile API.
• Remove SharedIO trait, since now we only have a single struct.
• Remove with_batch_size and select_columns. I don't see a need for the ParquetFile struct itself to maintain any reader state. That information is only used in the read phase, not the constructor phase, and so I think it's fine to pass those options into read or stream.
• Remove readRowGroup in favor of read. read now has options including a rowGroups parameter, that takes a list of integers.
• Define ReaderOptions struct for read options, used by both sync and async readers.

I couldn't get the row group selection to work in stream() here
https://github.com/kylebarron/parquet-wasm/pull/510/files#diff-e1a77beecd2634c6c0489c20cc3cae036ed6668d62c4d47f00760ab60b0d404eR188-R192

I was hitting lifetime errors with having a Vec<usize> there that wouldn't live long enough for the stream.

@H-Plus-Time I'd like to get a release out in the next day or two, because otherwise I'll forget about it again and it'll never get released. I already did a lot of other cleanup, so I think it's just this and a little more README updates and then I'm ready to publish 0.6. I don't want to spend a lot more time on this. But I wanted to give you a heads up in case you wanted to make any more edits before the release!

[github-actions]

Asset Sizes

Asset	Uncompressed Size	Compressed Size
async_full/parquet_wasm_bg.wasm	5.44MB $\color{green}\textbf{-18.6KB -0\%}$	1.27MB $\color{green}\textbf{-5.32KB -0\%}$
slim/parquet_wasm_bg.wasm	3.46MB $\color{red}\textbf{+1.57KB +0\%}$	548KB $\color{red}\textbf{+565B +0\%}$
sync/parquet_wasm_bg.wasm	4.74MB $\color{red}\textbf{+1.57KB +0\%}$	1.04MB $\color{green}\textbf{-79B -0\%}$

[H-Plus-Time]

Yep, I'll give the read_stream row groups bit a crack. I've seen some quirks relating to the package exports too, will check a few import scenarios too.

[kylebarron]

I've seen some quirks relating to the package exports too, will check a few import scenarios too.

Would love bug reports if you have any!