Bill details

### Feature : Bill Details Creation
#### User Story:
User can create new Bill Details.
#### Prerequisites:
- [ ] Create Bill Details table
- [ ] Implement Bill DTO
- [ ] Implement Bill Details DAO (create)
- [ ] Complete Bill Module Feature 1.

#### Validations:

##### Form Validation:

- [ ] Bill ID (id < 1)

##### Business Validation:
- [ ] Check the Bill table is exists or not.
- [ ] Check the Bill Details table is exists or not.
#### Messages:
- Invalid Bill ID.
- Bill table not found.
- Bill details table not found.

#### Flow:

```mermaid
graph TD;

A[Bill Details Service: Get bill details by bill ID] --> B[Form Validation]

B -- Yes --> C{Business Validation}
B -- No --> G[Throws Exception]

C -- Yes --> D[Bill Details DAO: Find bill details by bill ID]

D --> E[Bill Details Service: Display the Details ]

C -- No --> F[Bill Details Service: Bills not found ]
```