chore: rename 1 file and delete 3 files

Author: Ash-codes18

ToDo.md renamed to README.md

@@ -1,7 +1,9 @@
-- [ ] Add firebase authentication to login/signup page.
+# To-DO
+
+- [x] Add firebase authentication to login/signup page.
 - [ ] Add backend to the hackathon hosting form.
 - [x] implement search functionality on the hackathons page
-- [ ] Add a code editor and problem statement page for a hackathon.
+- [x] Add a code editor and problem statement page for a hackathon.
 - [x] implement a file uploading mechanism for hackathon participants
 - [ ] implement join a team and create a team functionality for hackathon participants
 - [ ] implement a notification function