Create home modal to configure dumpling dates app

[Fattimo]

#4

• Use the resources linked ^.
• In src/homeModals, create a new file homeDatesModal.ts
• In this file, create a modal that will configure the dumpling dates app.
• This modal should include two dropdowns: one to pick the day of the week to schedule a dumpling date, and another to pick how long it takes to schedule a dumpling date.
• Third, there should be a confirm button to confirm the validity of the button. You don't need to attach a function to this button just yet.
• Connect this new modal to the base home tab by pushing a view. This should pop up over the home tab https://slack.dev/bolt-js/concepts#updating-pushing-views