Add Notes->AKA for EquationGroup codenames

[jvoisin]

Sources used:

• https://www.rapid7.com/blog/post/2017/04/18/the-shadow-brokers-leaked-exploits-faq/
• https://github.com/x0rz/EQGRP

[jvoisin]

  1) modules it should behave like all modules with module type can be instantiated exploit unix/webapp/phpbb_highlight behaves like a module with valid metadata verifies modules metadata
     Failure/Error: expect(validator.errors.full_messages).to be_empty
       expected `["Stability must have CRASH_SAFE value if module has an ExcellentRanking, instead found []"].empty?` to be truthy, got false
     Shared Example Group: "a module with valid metadata" called from ./spec/support/shared/examples/all_modules_with_module_type_can_be_instantiated.rb:35
     Shared Example Group: "all modules with module type can be instantiated" called from ./spec/modules_spec.rb:16
     # ./spec/support/shared/examples/a_module_with_valid_metadata.rb:8:in `block (2 levels) in <top (required)>'

No idea how this could remotely be related to my changes :<