Added Ruby gem compatibility

[derian-cordoba]

Description

This PR resolved #1 and added the secure-keys.gemspec file adding the ruby gem compatibilty.

Currently, the gem is published officially on Ruby gem page.

To install the gem, run the following commands:

gem install secure-keys

or using bundler:

# Gemfile

gem 'secure-keys'

Install dependencies:

bundle install

Medias (if needed)

Testplan

• I tested this change on my local environment.
• I ran the unit tests.

Checklist

• I added tests for this change.
• I checked the code style and run the linter.
• I added necessary documentation (if applicable).