Enable Windows support

This commit enables Windows platform support by adding Windows platforms to the `supported?` methods in `compile_cache` and in `load_path_cache`.

Author: jpogran

lib/bootsnap/compile_cache.rb

@@ -34,9 +34,9 @@ def self.permission_error(path)
     end
 
     def self.supported?
-      # only enable on 'ruby' (MRI), POSIX (darwin, linux, *bsd), and >= 2.3.0
+      # only enable on 'ruby' (MRI), POSIX (darwin, linux, *bsd), Windows (RubyInstaller2) and >= 2.3.0
       RUBY_ENGINE == 'ruby' &&
-      RUBY_PLATFORM =~ /darwin|linux|bsd/ &&
+      RUBY_PLATFORM =~ /darwin|linux|bsd|mswin|mingw|cygwin/ &&
       Gem::Version.new(RUBY_VERSION) >= Gem::Version.new("2.3.0")
     end
   end

lib/bootsnap/load_path_cache.rb

@@ -61,7 +61,7 @@ def setup(cache_path:, development_mode:, active_support: true)
 
       def supported?
         RUBY_ENGINE == 'ruby' &&
-        RUBY_PLATFORM =~ /darwin|linux|bsd/
+        RUBY_PLATFORM =~ /darwin|linux|bsd|mswin|mingw|cygwin/
       end
     end
   end