[proposal] Rework all DataType aliases as e.g. DataType.int8 #13
Description
Rework all DataType aliases as e.g. DataType.int8.
My main motivation is to try to keep all type names as part of a struct or otherwise CamelCase. I know it seems trivial, but I walso want to do the same for all the ffi types (see https://github.com/modular/modular/pull/3766/files#diff-469021eaa7a8ace5590013e2e35e00dfb81e04fa05f114c0c0aec566f5af1815R26), I haven't gotten around to actually proposing this separately from the ffi refactor PR, but I'll get to it eventually.
WDYT?