update the readme

added comments and updated readme file

fixed small error

fixed errors

fixed errors

updated app.py

update app and openenv

updated grader functionality

updated openenv.yaml

grade 3 task update

fix: add separate grader classes per task in graders.py

fix: add 3 tasks with graders and grade endpoint

fix: add tasks with graders to openenv.yaml and grade() method

Add application file

initial commit