Basis for the job system (#434)

* Add basic yaml Jobs file

* Add Job Prototype

* Rename Jobs to Job

* Remove BaseJob

* Add the Job class child of Role

* Add code for spawning as an assistant. Not actually working, the job prototype can't be found.

* Fix role instead of job left in yaml

* Add starting gear support for job and the starting gear for assistant as an exemple

* Link job with starting gear in yaml

* Better naming and some error handling

* Tweak error handling

Content.Server/Mobs/Roles/Job.cs

@@ -0,0 +1,35 @@
+using System;
+using System.Collections.Generic;
+using Content.Server.Interfaces.Chat;
+using Content.Shared.Jobs;
+using Robust.Shared.IoC;
+
+namespace Content.Server.Mobs.Roles
+{
+    public class Job : Role
+    {
+        private readonly JobPrototype _jobPrototype;
+
+        public override string Name { get; }
+
+        public String StartingGear => _jobPrototype.StartingGear;
+
+        public Job(Mind mind, JobPrototype jobPrototype) : base(mind)
+        {
+            _jobPrototype = jobPrototype;
+            Name = jobPrototype.Name;
+        }
+
+        public override void Greet()
+        {
+            base.Greet();
+
+            var chat = IoCManager.Resolve<IChatManager>();
+            chat.DispatchServerMessage(
+                Mind.Session,
+                String.Format("You're a new {0}. Do your best!", Name));
+        }
+    }
+
+
+}