Assign categories to expenses (#28)

* add expense categories

* set category to Payment for reimbursements

* Insert categories as part of the migration

* Display category groups

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Co-authored-by: Sebastien Castiel <sebastien@castiel.me>

src/scripts/migrate.ts

@@ -80,6 +80,7 @@ async function main() {
           amount: Math.round(expenseRow.amount * 100),
           groupId: groupRow.id,
           title: expenseRow.description,
+          categoryId: 1,
           expenseDate: new Date(expenseRow.created_at.toDateString()),
           createdAt: expenseRow.created_at,
           isReimbursement: expenseRow.is_reimbursement === true,