Added Encoding::Perl (closes #534).

* Decoding [Perl Unicode Named Characters][1] is currently not supported and
  will raise a `NotImplementedError`.

[1]: https://www.perl.com/pub/2012/04/perlunicook-unicode-named-characters.html/

README.md

@@ -51,6 +51,7 @@ research and development.
     * [PowerShell][docs-encoding-powershell]
     * [Punycode][docs-encoding-punycode]
     * [Quoted-printable][docs-encoding-quoted-printable]
+    * [Perl strings][docs-encoding-perl]
     * [PHP strings][docs-encoding-php]
     * [Ruby strings][docs-encoding-ruby]
     * [Shell][docs-encoding-shell]
@@ -212,6 +213,7 @@ along with ronin-support.  If not, see <https://www.gnu.org/licenses/>.
 [docs-encoding-powershell]: https://ronin-rb.dev/docs/ronin-support/Ronin/Support/Encoding/PowerShell.html
 [docs-encoding-punycode]: https://ronin-rb.dev/docs/ronin-support/Ronin/Support/Encoding/Punycode.html
 [docs-encoding-quoted-printable]: https://ronin-rb.dev/docs/ronin-support/Ronin/Support/Encoding/QuotedPrintable.html
+[docs-encoding-perl]: https://ronin-rb.dev/docs/ronin-support/Ronin/Support/Encoding/Perl.html
 [docs-encoding-php]: https://ronin-rb.dev/docs/ronin-support/Ronin/Support/Encoding/PHP.html
 [docs-encoding-ruby]: https://ronin-rb.dev/docs/ronin-support/Ronin/Support/Encoding/Ruby.html
 [docs-encoding-shell]: https://ronin-rb.dev/docs/ronin-support/Ronin/Support/Encoding/Shell.html

lib/ronin/support/encoding.rb

@@ -33,6 +33,7 @@
 require 'ronin/support/encoding/sql'
 require 'ronin/support/encoding/quoted_printable'
 require 'ronin/support/encoding/smtp'
+require 'ronin/support/encoding/perl'
 require 'ronin/support/encoding/php'
 require 'ronin/support/encoding/python'
 require 'ronin/support/encoding/ruby'

lib/ronin/support/encoding/core_ext.rb

@@ -31,6 +31,7 @@
 require 'ronin/support/encoding/xml/core_ext'
 require 'ronin/support/encoding/quoted_printable/core_ext'
 require 'ronin/support/encoding/smtp/core_ext'
+require 'ronin/support/encoding/perl/core_ext'
 require 'ronin/support/encoding/php/core_ext'
 require 'ronin/support/encoding/python/core_ext'
 require 'ronin/support/encoding/ruby/core_ext'