feat: Added ablity to update Services Cache at runtime.

[pyromanci]

Description
I need a different method to load Modules. I wanted to set it up so it was more database driven for enabling or disabling a module. This lead to problems with Services not being auto discovered by the buildServicesCache() function. As the autoloader doesn't know those files exist at the point it time it is called. So added a function that will update the service cache with and new Classes discovered since initial build.

Checklist:

• Securely signed commits
• Component(s) with PHPDoc blocks, only if necessary or adds value
• Unit testing, with >80% coverage
• User guide updated
• Conforms to style guide

[kenjis]

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[kenjis]

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