feat: Implement feature to list all employees from a project (SCRUM-46) (!36)

Co-authored-by: Phan Huy Tran <p.tran@neusta.de>
Reviewed-on: #36

requests/employee/createEmployee.http

@@ -3,10 +3,13 @@ Authorization: Bearer {{auth_token}}
 Content-Type: application/json
 
 {
-  "firstName": "Jan",
-  "lastName": "Klattenhoff",
-  "street": "Pirolweg 17",
+  "firstName": "Jan1",
+  "lastName": "Klattenhoff1",
+  "street": "Pirolweg 171",
   "postcode": "27777",
-  "city": "Gandakersee",
-  "phone": "017684984816"
+  "city": "Gandakersee1",
+  "phone": "0176849848161",
+  "skillSet": [
+    "1"
+  ]
 }

requests/employee/getEmployee.http

@@ -1,2 +1,2 @@
-GET https://employee.szut.dev/employees/312
+GET https://employee.szut.dev/employees/315
 Authorization: Bearer {{auth_token}}

requests/project/createProject.http

@@ -6,7 +6,7 @@ Content-Type: application/json
 {
   "name": "name",
   "leading_employee": 1,
-  "employees": [2, 3],
+  "employees": [315, 312],
   "contractor": 4,
   "contractor_name": "Peter File",
   "comment": "goal of project",

requests/project/getEmployeesFromProject.http

@@ -0,0 +1,2 @@
+GET http://localhost:8080/projects/2/employees
+Authorization: Bearer {{auth_token}}