WorkShop Module | Login Feature

# Workshop Login Process
## User Story
**User Story:**
As a registered Workshop , I want to securely log into the application with my credentials to access my personalized content and features.

## Task
- [x] Implementation of DAO Layer
- [x] Validation of inputs
- [x] Implementation of a Service Layer
- [x] Create JUnit TestCases
- [x] Ensure Test Cases are passing
- [x] Write comments for the methods used

## DAO

- [x] FindWorkshopByNumber

## Service
- [x] Login Workshop

## Validation
- [x] workShop Number , password Validation
- [x] Active workShop Validation

## Junit Test Cases
### Dao
- [x] findWorkshopByNumber Test
### Service
- [x] LoginWorkshop Test
### Validation
- [x] Workshop number Password Validation Test
- [x] Active Workshop Validation Test
## FlowChart
```mermaid
graph TD;
A[ Start ];
B[ Workshop number,Password Validation]
C[ Active Workshop Validation]
D[ InValid Entry Exception]
E[ Workshop PassWord Validation]
F[Get Workshop ID]
A --> B
B -->|Success|C
B -->|Fail|D
D -->H
C --> |success| E
C -->|Fail| I[Service Exception]
E -->|success|F
E -->|Fail|G[Service Exception]
G --> H
F -->|Stores in session Storage| H[End]