help RuboCop pick the correct config

The problem is that RuboCop by default picked the inner most config
file. This means that if we want to use RuboCop for Pliny itself with a
.rubocop.yml config in the project root, we allways need to append `-c
.rubocop.yml`. If you don't do this you are greeted with a lot of
errors. Which is especially annoying if you have RuboCop integrated in
your editor. With this change it works out of the box. With a minimal
trade-off by renaming the template.

Author: beanieboi

.github/workflows/lint.yml

@@ -23,4 +23,4 @@ jobs:
           ruby-version: ${{ matrix.ruby-version }}
           bundler-cache: true
       - name: Run RuboCop
-        run: bundle exec rubocop -c .rubocop.yml
+        run: bundle exec rubocop

lib/pliny/commands/creator.rb

@@ -26,6 +26,7 @@ def run!
 
       FileUtils.copy_entry template_dir, app_dir
       FileUtils.rm_rf("#{app_dir}/.git")
+      FileUtils.mv("#{app_dir}/.rubocop_template.yml", "#{app_dir}/.rubocop.yml")
       parse_erb_files
       display "Pliny app created. To start, run:"
       display "cd #{app_dir} && bin/setup"

lib/template/.rubocop.yml lib/template/.rubocop_template.ymllib/template/.rubocop.yml renamed to lib/template/.rubocop_template.yml

@@ -21,6 +21,7 @@
       @gen.run!
       assert File.exist?("./foobar")
       assert File.exist?("./foobar/Gemfile")
+      assert File.exist?("./foobar/.rubocop.yml")
     end
 
     it "deletes the .git from it" do