Book Module | List Book Feature

# List Book Process

### User Story
As a user, I want to be able to view a list of all the books available in the library's collection. The system should provide me with a comprehensive list that includes details such as book titles, authors, genres, and availability statuses. This way, I can easily browse through the library's offerings and select a book to read.

### Task

- [x] Implement Data Access Object (DAO) Layer.
- [x] Implement Service Layer.
- [x] Create JUnit Test Cases.
- [x] Ensure that the tests cases are passing.
- [x] Write clear and concise comments in the code to explain complex logic.

#### DAO
- getAllBooks()

#### Service
- listAllBooks()

#### Junit Test
- testListAllBooks()

### Estimation
- 3 hours

# Flowchart

```mermaid
graph TD
A[[Start]] --> B[(Fetch Book List)]
B --> |No Books Found| F{{Service Exception}}
B --> |Book List Available| D([Returns Book List])
D --> |Success| I([Display Book List])
F --> |Fail| G([Failed to get book list])
G --> H[[End]]
I --> H

style I fill:#dfd,stroke:#333
style G fill:#fdd,stroke:#333