Merged PR 522: #2844: Added evaluation stage to Ray notebooks.

## Summary
Added evaluation stage to Training-an-RLLib-Agent and Training-an-RLLIB-MARL-System notebooks.

## Test process
Tested individual notebooks.
Ran all PrimAITE tests.

## Checklist
- [X] PR is linked to a **work item**
- [X] **acceptance criteria** of linked ticket are met
- [X] performed **self-review** of the code
- [ ] written **tests** for any new functionality added with this PR
- [ ] updated the **documentation** if this PR changes or adds functionality
- [ ] written/updated **design docs** if this PR implements new functionality
- [ ] updated the **change log**
- [X] ran **pre-commit** checks for code style
- [ ] attended to any **TO-DOs** left in the code

#2844: Added evaluation stage to Ray notebooks.

Related work items: #2844

src/primaite/notebooks/Training-an-RLLIB-MARL-System.ipynb

@@ -82,6 +82,22 @@
     "algo = config.build()\n",
     "results = algo.train()"
    ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "### Evaluate the results"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "eval = algo.evaluate()"
+   ]
   }
  ],
  "metadata": {

src/primaite/notebooks/Training-an-RLLib-Agent.ipynb

@@ -74,6 +74,22 @@
     "algo = config.build()\n",
     "results = algo.train()\n"
    ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "### Evaluate the results"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "eval = algo.evaluate()"
+   ]
   }
  ],
  "metadata": {