Added completion for resource-like class

Modified completion provider to allow completion for resource-like class

link: https://puppet.com/docs/puppet/5.3/lang_classes.html#using-resource-like-declarations

class keyword behave like resource when using a defined class, and name parameter become the class name to lookup by the helper

lib/puppet-languageserver/manifest/completion_provider.rb

@@ -55,7 +55,14 @@ def self.complete(content, line_num, char_num, options = {})
           # properities and parameters.
 
           # Try Types first
-          item_object = PuppetLanguageServer::PuppetHelper.get_type(item.type_name.value)
+          if item.type_name.value == 'class'
+            item_object = PuppetLanguageServer::PuppetHelper.get_type(item.bodies[0].title.value)
+            item_value = item.bodies[0].title.value
+          else
+            item_object = PuppetLanguageServer::PuppetHelper.get_type(item.type_name.value)
+            item_value = item.type_name.value
+          end
+
           unless item_object.nil?
             # Add Parameters
             item_object.attributes.select { |_name, data| data[:type] == :param }.each_key do |name|
@@ -66,7 +73,7 @@ def self.complete(content, line_num, char_num, options = {})
                 'data'   => {
                   'type'          => 'resource_parameter',
                   'param'         => name.to_s,
-                  'resource_type' => item.type_name.value
+                  'resource_type' => item_value
                 }
               )
             end
@@ -79,15 +86,15 @@ def self.complete(content, line_num, char_num, options = {})
                 'data'   => {
                   'type'          => 'resource_property',
                   'prop'          => name.to_s,
-                  'resource_type' => item.type_name.value
+                  'resource_type' => item_value
                 }
               )
             end
             # TODO: What about meta parameters?
           end
           if item_object.nil?
             # Try Classes/Defined Types
-            item_object = PuppetLanguageServer::PuppetHelper.get_class(item.type_name.value)
+            item_object = PuppetLanguageServer::PuppetHelper.get_class(item_value)
             unless item_object.nil?
               # Add Parameters
               item_object.parameters.each_key do |name|
@@ -98,7 +105,7 @@ def self.complete(content, line_num, char_num, options = {})
                   'data'   => {
                     'type'          => 'resource_class_parameter',
                     'param'         => name.to_s,
-                    'resource_type' => item.type_name.value
+                    'resource_type' => item_value
                   }
                 )
               end