support reading from avro files [FEATURE-REQUEST]

[stellaywu]

Description
Support reading from avro files natively from cloud

vaex.open("gs://path_of_many_avro_files", fs_options={'anon': True})

Is your feature request related to a problem? Please describe.
Currently the workaround is to read_in with pandas as pandas dataframe then convert to vaex dataframe which doesn't work when data is too big.

Thanks

[JovanVeljanoski]

I don't know much about avro files or whether they are memory mappable. Maybe @maartenbreddels knows more.

[bdsaved]

Has this feature been implemented?

[maartenbreddels]

No, I never used avro files. The only workaround, for now, is to use a different library to read it, then feed it to vaex.