Add support for binary function calls in suspicious_operation_groupings lint

[MarijnS95]

#6086 introduced suspicious_operation_groupings that made us find a binop issue in Gstreamer. In addition to if statements in #6275 it'd be nice to support binary function call chains like cmp as well, which suffered the same issue:

self.0
    .hours
    .cmp(&other.0.hours)
    .then_with(|| self.0.minutes.cmp(&other.0.hours)) // Should be other.0.minutes
    .then_with(|| self.0.seconds.cmp(&other.0.seconds))
    .then_with(|| self.0.frames.cmp(&other.0.frames))

The expressions are separated by then_with and closures instead of a simple && binary op so this might be quite a stretch.