Implement basic budgeting

Date	Funds_added	Funds_subtracted

[x] Add a new table to the db for tracking user settings... This will probably need to be reworked later into something more NoSQL. This will do for now.

Setting	Number
Target_allowance
Max_allowance

[ ] Create some way for the user to set those numbers in the TUI
[x] Create a formula to give each task a base reward value
[ ] Create a zero-sum formula to modify that value based on times_shown & times_selected
[x] Replace the placeholder "$1.00" with the tasks updated reward value
[x] Create an entry in the budgeting db for each task completion
[x] Create a shop screen with a custom deduction box
[x] Should also display current funds
[x] Connect the deduction box to the transaction db

Emerson-Alexander / UpNext-Core