Implement create project route

requests/createProject.http

@@ -0,0 +1,15 @@
+### GET request to example server
+POST http://localhost:8080/projects
+Authorization: Bearer {{auth_token}}
+Content-Type: application/json
+
+{
+  "name": "name",
+  "leading_employee": 1,
+  "employees": [2, 3],
+  "contractor": 4,
+  "contractorName": "Peter File",
+  "comment": "goal of project",
+  "startDate": "01.01.2000",
+  "plannedEndDate": "01.01.2001"
+}