Perl::Critic policy

I had worked in the past on a Perl::Lint policy. It's available here.

I want to use this ticket to collect what this should include (possibly multiple policies) so it could be coordinated, documented, and written:

• Detect and forbid param and params. (params('query') can be identified to recommend query_parameters instead.)
• Detect and forbid dance. (Suggest to_app instead.)
• ProhibitObsoleteImport: detects old import options.
• ProhibitObsoleteKeywords: detects keywords that are no longer supported.
• SuperfluousReturn: return send_error(...); or return redirect(...);.

Start by reviewing the linked Perl::Lint policy and the policy cases listed in this issue. Decide how the requested checks should be grouped, coordinated, documented, and written. Done means the selected policies are agreed on, documented, and implemented.