Create a bank of date ideas and icebreaker questions and generate a new one

[Fattimo]

• In the dates/modals/postMessage.ts (a file named something like this, the one that creates a message between pairings), create two static arrays of ice breaker questions and date ideas (or if you think it's too much to put into one file, create two ts files that include this info and import it). ask me for a list of these ideas.
• Depending on how the modal is formatted, create two functions that update the modal with a random date idea/icebreaker. Be sure you have the button call these functions after you have written them

https://api.slack.com/surfaces/modals/using#updating_views