Merged PR 419: integrate NIC traffic into observation space

## Summary
- Integrates the NIC traffic into the observation space
- Added `monitored_traffic` property into agent config which specifies which traffic is going to be included in observation

## Test process
https://dev.azure.com/ma-dev-uk/PrimAITE/_git/PrimAITE/pullrequest/419?_a=files&path=/tests/integration_tests/game_layer/observations/test_nic_observations.py

## Checklist
- [X] PR is linked to a **work item**
- [X] **acceptance criteria** of linked ticket are met
- [X] performed **self-review** of the code
- [X] 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

Related work items: #2658

src/primaite/config/_package_data/data_manipulation.yaml

@@ -188,6 +188,11 @@ agents:
               num_nics: 2
               include_num_access: false
               include_nmne: true
+              monitored_traffic:
+                icmp:
+                    - NONE
+                tcp:
+                    - DNS
               routers:
                 - hostname: router_1
               num_ports: 0