Feature/fixed decimal separator (pointfreeco#889)

* fix formatting of numbers to have stable snapshots

as seen in pointfreeco#533

* fix to make tests compile

pointfreeco#887

---------

Co-authored-by: stijn <[email protected]>

Author: doozMen

Sources/SnapshotTesting/Snapshotting/CGPath.swift

@@ -153,6 +153,7 @@
 
   private let defaultNumberFormatter: NumberFormatter = {
     let numberFormatter = NumberFormatter()
+    numberFormatter.decimalSeparator = "."
     numberFormatter.minimumFractionDigits = 1
     numberFormatter.maximumFractionDigits = 3
     return numberFormatter

Sources/SnapshotTesting/Snapshotting/NSBezierPath.swift

@@ -105,6 +105,7 @@
 
   private let defaultNumberFormatter: NumberFormatter = {
     let numberFormatter = NumberFormatter()
+    numberFormatter.decimalSeparator = "."
     numberFormatter.minimumFractionDigits = 1
     numberFormatter.maximumFractionDigits = 3
     return numberFormatter

Tests/SnapshotTestingTests/AssertSnapshotSwiftTests.swift

@@ -1,7 +1,6 @@
 #if canImport(Testing)
   import Testing
   import Foundation
-  import InlineSnapshotTesting
   @_spi(Experimental) import SnapshotTesting
 
   @Suite(