[x] Write a script to populate the Collection with some sample Categories
[x] Update the transaction population script with some of the added categories
[x] The "Add Budget" button should trigger a modal to appear
[x] The modal should allow us to specify a budget Name, the various categories, and the amount
[x] We should be able to select from any available categories for our budget to encompass
[x] We should be able to add categories within the "Add Budget" modal
Consider that this functionality will be used throughout our application, such as when we add transactions or edit transactions. We may want to componentize it somehow.
ACs: