empty_count rule has false positives for non-Collection comparisons

[danielbyon]

I'm seeing the empty_count rule triggering an error when doing a count comparison that isn't on a Collection, as shown in the screenshot below:

I think this can be solved by making the following change to Source/SwiftLintFramework/Rules/EmptyCountRule.swift line 34:

From:
let pattern = "count\\s*(==|!=|<|<=|>|>=)\\s*0"

To:
let pattern = ".count\\s*(==|!=|<|<=|>|>=)\\s*0"

This will ensure that we're checking for uses of the count member var, instead of checking every identifier named "count".

Running Swiftlint 0.15.0

[jpsim]

Duplicate of #827