Add Cocoapods to generated list so it doesn't show in PR diffs (#3865)

* Add Cocoapods to generated list so it doesn't show in PR diffs

* Removed Cocoapods from vendor.yml

* Enhance regex to match only Cocoapod's Pods folder

* Adds additional test cases for generated Pods folder

lib/linguist/generated.rb

@@ -52,6 +52,7 @@ module Linguist
     # Return true or false
     def generated?
       xcode_file? ||
+      cocoapods? ||
       generated_net_designer_file? ||
       generated_net_specflow_feature_file? ||
       composer_lock? ||
@@ -95,6 +96,13 @@ module Linguist
       ['.nib', '.xcworkspacedata', '.xcuserstate'].include?(extname)
     end
 
+    # Internal: Is the blob part of Pods/, which contains dependencies not meant for humans in pull requests.
+    #
+    # Returns true or false.
+    def cocoapods?
+      !!name.match(/(^Pods|\/Pods)\//)
+    end
+
     # Internal: Is the blob minified files?
     #
     # Consider a file minified if the average line length is

lib/linguist/vendor.yml

@@ -242,9 +242,6 @@
 # Carthage
 - ^Carthage/
 
-# Cocoapods
-- ^Pods/
-
 # Sparkle
 - (^|/)Sparkle/