I am trying to implement an OCR text extraction plugin. I saw the option of the PHP-form plugin where you add a script to do some functionalities but, this is only a temporary and drive base solution to a specific form of a known element name and such. I want to when you have a file upload element I can extract the content or metadata of it and store in an element on the database table. From my understanding, a plugin element is linked to a specific element. How would I proceed to handle this problem? Till now I am using a script using the PHP form plugin that calls apache-tika app and store in a previously created textarea element. Does it exist in development or a plan to do an OCR/text extraction from file plugin?