Create a diagram that describes the sign up/opt out workflow

[iritush]

Create a diagram that describes the sign up/opt out workflow:
Differentiate between parts that are already implemented and those that are planned to be implemented. By color maybe

States

• API States

Use Cases

• User successfully finds a case and signs up for a reminder
• User doesn't find a case
• User enters an input that doesn't match regex
• User finds a case but doesn't sign up for notification
• User finds multiple cases

[iritush]

From @iamyume https://github.com/codeforbtv/courtbot-vt-frontend/blob/main/docs/states.md

[courtneyfay]

hey @iritush do you feel like the diagrams that were merged in are satisfactory to close this ticket? https://github.com/codeforbtv/courtbot-vt-frontend/blob/main/docs/use-cases.md