Add --no_force_warnings

[hkoba]

Currently, perlminlint tests all scripts with -w option. Unfortunately, there are some modules on CPAN which are useful, widely used but not perl -w clean. So, let's add an option to override this behavior and allow testing scripts without -w.

---

For example, perlminlint reports an error about Template::Mustache::Parser for the following script
at least for now.

package Foo;
use strict;
use warnings;

use Template::Mustache;
1;

Here is the error.

False [] range "/-\w" in regex; marked by <-- HERE in m/\A(?:[/-\w <-- HERE .]+)/
 at /home/hkoba//tmp/minlinttest/local/lib/perl5/Template/Mustache/Parser.pm line 2969.

You can avoid the above by adding no_force_warnings: 1 to your .perlminlint.yml in your project root (or somewhere surrounding) directory.

% echo no_force_warnings: 1  >> .perlminlint.yml