Fix: Allow opting out of Caching for environments that don't Support filesystem modifications

[fabiankaegy]

This pull request updates the caching behavior for class discovery in the framework, making it easier to disable caching in environments that do not support writable file systems. The most important changes clarify and implement a new constant, TENUP_FRAMEWORK_DISABLE_CACHE, which allows developers to skip caching regardless of environment type. Documentation has also been updated to reflect this new option.

Caching logic improvements:

• Updated the caching condition in src/ModuleInitialization.php to support disabling cache when TENUP_FRAMEWORK_DISABLE_CACHE is set to true, in addition to skipping cache on VIP_GO_APP_ENVIRONMENT. This makes cache control more flexible for various environments.

Documentation updates:

• Revised docs/Autoloading.md to explain that caching is now skipped when TENUP_FRAMEWORK_DISABLE_CACHE is true, and provided guidance for using this constant in environments without writable file systems.
• Updated docs/Modules-and-Initialization.md to include TENUP_FRAMEWORK_DISABLE_CACHE as a way to disable caching, along with examples of its usage and explanation of its intended purpose.

[fabiankaegy]

Closing in favor of #26