The _Add Receipt_ form now has a _Restaurant_ toggle. When uploading a
receipt that creates or updates a Firefly III transaction, if the toggle
is activated, a special tag will be added to the transaction. The
assumption is that Firefly will have a rule to automatically adjust the
destination account, category, and/or budget for the transaction if this
tag is present. The tag is configurable and defaults to `Food & Drink`.
* Reorganizing code into more logical modules:
- `routes` specifically for Rocket handler functions
- `receipts` data model for receipts
- `transactions` for Firefly transactions
* Encapsulate database operations for receipts using the repository
pattern; move SQL queries to external files (`sqlx` can only use
string literals or external files for queries, not variables or
constants)
* Remove obsolete routes, templates for old transaction-focused pages
Dustin