Create modal for message between pairs

[Fattimo]

If any referenced directories don't exist, create them

• In src/plugins/dates/modals, create a typescript file called pairingMessage or something along those lines
• Use the slack block kit builder to create a message between two individuals.
• This message should have buttons to generate a random ice breaker or generate a random date idea. It doesn't need to have the functions linked yet, but just make sure the buttons are there
• Copy paste this into your TS file, and export it as a function.
• This function should take an array of user ids, and should populate the modal with the names of the users. You can find this info using the method here: https://api.slack.com/methods/users.info
• Return this modal, then edit the scripts.ts file to call this method when pairings are made