Add simplecov, initial config

Author: brrygrdn

.gitignore

@@ -23,3 +23,4 @@ vendor
 /dry-run
 **/bin/helper
 /.core-bash_history
+coverage/

common/dependabot-common.gemspec

@@ -41,6 +41,7 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "rspec", "~> 3.8"
   spec.add_development_dependency "rspec-its", "~> 1.2"
   spec.add_development_dependency "rubocop", "~> 0.92.0"
+  spec.add_development_dependency "simplecov", "~> 0.19.0"
   spec.add_development_dependency "vcr", "6.0.0"
   spec.add_development_dependency "webmock", "~> 3.4"
 

common/spec/spec_helper.rb

@@ -4,6 +4,7 @@
 require "webmock/rspec"
 require "vcr"
 require "byebug"
+require "simplecov"
 
 require_relative "dummy_package_manager/dummy"