Improved architecture

What's Changed

• Add Changelog by @vernaperumal in #4
• Rubocup gem, configuration file and workflow by @vernaperumal in #6
• MIT License Badge by @vernaperumal in #7
• Update test.yml by @vernaperumal in #13
• Moved Rubocop to workflows by @vernaperumal in #14
• Add Reek by @vernaperumal in #15
• Add Brakeman by @vernaperumal in #17
• Add Badges by @vernaperumal in #18
• Add codecov by @vernaperumal in #20

Full Changelog: https://github.com/heychimpy/rack-influxdb/commits/v0.2.0