JS API: .or() syntax

[MentalGear]

Currently, the or() expects raw PostgREST syntax for the filter names and values, which is counter to the use of the rest of the JS functions.
It'd be more idiomatic if it could be extended to behave like:

 .eq('name', 'US').or().eq('name', 'New Zealand')  

or even:

 .eq('name', 'US' || 'New Zeland')