load checkstyle config from config file uri

[Anmol202005]

Update CheckstyleAutoFix.java and implement loading checkstyle-config.

comment: #35 (comment)

Create Configuration class similar to com.puppycrawl.tools.checkstyle.api.Configuration

[rdiachenko]

We should also update Header recipe to use loaded config as part of this issue. Point 3 from #35 (review):

PR for using header recipe with config