Moved DB config to ENV (#4)

Co-authored-by: Joe Arndt <jmarndt@users.noreply.github.com>
Reviewed-on: #4

src/expenses/expenses.module.ts

@@ -2,9 +2,13 @@ import { Module } from '@nestjs/common';
 import { ExpensesService } from './expenses.service';
 import { ExpensesController } from './expenses.controller';
 import { ExpenseDataService } from './expense-data.service';
+import { TypeOrmModule } from '@nestjs/typeorm';
+import { Expense } from './entities/expense.entity';
 
 @Module({
   controllers: [ExpensesController],
   providers: [ExpensesService, ExpenseDataService],
+  imports: [TypeOrmModule.forFeature([Expense])],
+  exports: [TypeOrmModule]
 })
 export class ExpensesModule { }