moved around functions, fixed the super-help function, changed some of the tests for persistent_data

updated grid code to handle a shared result dictionary, took some effort but it works now. requires some tricks here and there tho

Changed the api code: removed all the functions that did a slightly different thing. put them into 1 function that has several options. Moreover, cleaned up code, test functions, and other functions throughout code

updated grid code to be more clean, and have dedicated setup and cleanup functionalities. hopefully code will stay cleaner

updating scaling plots. added pool closing and joining at the end of the MP part because on astro2 I suddenly got the error of having too many open files

fixing errors: hdf5 file creation when there are no settings. and the setting export if there is a functio in it

updated scaling plots and function to compare the grid runs. i need to keep in mind that these calculations are very probably limited the the physical amount of cores the machine has