Issue #2289281: Initial commit for Disqus to Drupal comments migration. Created source plugin and migration configuration files.
Matching email of comments author, with emails of Drupal users. If match is found, we import the comments with the uid of the mail's user else we set the uid to 0 (for anonymous user)
Fixed typos, indentation and other minor errors.
Fixed error in returning the array for getIds() in \Plugin\migrate\source\DisqusComment
Fixed few syntax errors
Removed duplicate function disqus_api(). Injected config services logger.factory and config.factory. Using EntityQuery to check if any drupal user has the same mailid as the author email.
Injected the entity.query service. Fixed indentations
Removed entity_id and entity_type field from plugin disqus_source. Migration processes these fields using process plugins
Merge pull request #25 from angrycodr/Migration-write-disqus-to-drupal-comments-migration-and-source-plugin

Create Migrate source plugin