webservice API for GUI operation

[sayan801]

@dolu1602 Implement CRUD operations for Doctor... List down the API urls

[dolu1602]

For Add or update doctors: http://localhost:8080/hmsapp/hms/addOrUpdateDoctor

For Add or delete doctor: http://localhost:8080/hmsapp/hms/deleteDoctor

For loading all the doctors:

http://localhost:8080/hmsapp/hms/findDoctorByAttributes

To load doctor by Id

http://localhost:8080/hmsapp/hms/findDoctorByID

Sample code to call

[sayan801]