Allow field access on same line when breaking long chain?

[singpolyma-shopify]

rustfmt currently requires:

self.serializer
    .writer
    .write_u32::<LittleEndian>(array_offset)?;

It seems that it would be reasonable to have a setting for:

self.serializer.writer
    .write_u32::<LittleEndian>(array_offset)?;

[scampi]

@topecongiro Do you want to have a new config option for this ? Or an improvement to the default formatting of chains ?

[singpolyma-shopify]

@scampi either. Having this be the default seems right to me, but if others disagree an option works fine.

[ytmimi]

Going to close this in favor of #4306, which has a lot more discussion on chain formatting