connection of textfilegetters to lazy loading

Description:
Upon completion of the refactoring process and successful implementation of lazy loading on ELPM devices, as outlined in issue #8, the introduction of a cached getter for text files could be beneficial. This would likely necessitate the creation of a struct with a function pointer to this getter, due to the requirement of maintaining a state. Key considerations for this implementation include determining the size of the array of managed lazy strings and setting a maximum limit for RAM memory usage by this cache.

User Story:
As a developer, I desire a cached getter for text files with lazy loading, allowing me to control the maximum RAM memory usage or the number of cached strings, thereby simplifying the management of heap memory and separating this concern into this module..