Vehicle Module | add vehicle feature

# Add Vehicle process
## User Story
As a user i have to register my vehicle when I have to get service from a workshop

## Task
- [ ] Implementation of Dao Layer
- [ ] Implementation of Validation Layer
- [ ] Implementation of Service Layer
- [ ] Implementation of JUnit Test Cases
- [ ] Writing methods with comments
- [ ] Ensuring the test cases are passing

## Dao
- [ ] addVehicle
- [ ] findVehicleByUserid

## Validation
- [ ] vehicle Credentials Validation
- [ ] duplicate vehicle validation
- [ ] user Validation

## Service
- [ ] createVehicle

## JUnit Test Cases
### Dao
- [ ] add vehicle Test
- [ ] find vehicle by Id Test
### Validation
- [ ] Vehicle Credentials Test
- [ ] Duplicate Vehicle Validation Test
- [ ] User Id Validation
### Service
- [ ] Create Vehicle Test

## FlowChart

```mermaid
graph TD;
A[Start] --> B[Vehicle Credentials Validations];
B --> |Valid|C[ User Id Validation];
B --> |InValid|E[ InValidEntryException]
E --> |Fail| H[ Registration Failed ]
C -->| Valid | D[ Duplicate Vehicle Validation by vehicle number ];
D -->|Success| J[ vehicle added Successfull ]
C -->| Invalid | F[ Validation Exception ];
F --> | Fails | H
J --> K[ end ]
H -->K