Feat:constant loading improvements

[Uaitt]

In this PR I provide a new way of loading constants for AASM RBS.

Description

In this PR:

• executable must be called at the root of the project directory now.
• while dealing with a Rails project constants are loaded with the Rake::Task[:environment] task, while dealing with a pure-ruby project the file is required manually.
• documentation was updated to reflect the new changes and to be more expressive. Badges have been added too.
• configure rbs_collection to load 3rd party RBS dependencies.

Motivation and Context

How has this been tested?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.