Merge branch 'clean_up' into 'main'

fix: renamed modules.py and .gitignore, deleted unneeded directories, added tests directory

See merge request !25

read_sequencer_package/cli.py

 import argparse
-from modules import ReadSequencer
+from read_sequencer import ReadSequencer
 import logging
 
 parser = argparse.ArgumentParser(prog='read_sequencer',