Merged PR 348: #2462 - Refactor of DatabaseClient and DatabaseServer

## Summary
Refactor of `DatabaseClient` and `DatabaseService` to update how connection IDs are generated. These are now provided by DatabaseService when establishing a connection.
Creation of `DatabaseClientConnection` class. This is used by `DatabaseClient` to hold a dictionary of active db connections.

## Test process
Tests have been updated to reflect the changes and all pass

## 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
- [X] updated the **documentation** if this PR changes or adds functionality
- [ ] written/updated **design docs** if this PR implements new functionality
- [X] updated the **change log**
- [X] ran **pre-commit** checks for code style
- [X] attended to any **TO-DOs** left in the code

Related work items: #2462

tests/integration_tests/test_simulation/test_request_response.py

@@ -7,6 +7,7 @@
 import pytest
 
 from primaite.interface.request import RequestResponse
+from primaite.simulator.network.container import Network
 from primaite.simulator.network.hardware.node_operating_state import NodeOperatingState
 from primaite.simulator.network.hardware.nodes.host.host_node import HostNode
 from primaite.simulator.network.hardware.nodes.network.router import ACLAction, Router
@@ -97,7 +98,7 @@ def test_request_fails_if_node_off(example_network, node_request):
 class TestDataManipulationGreenRequests:
     def test_node_off(self, uc2_network):
         """Test that green requests succeed when the node is on and fail if the node is off."""
-        net = uc2_network
+        net: Network = uc2_network
 
         client_1_browser_execute = net.apply_request(["node", "client_1", "application", "WebBrowser", "execute"])
         client_1_db_client_execute = net.apply_request(["node", "client_1", "application", "DatabaseClient", "execute"])
@@ -131,7 +132,7 @@ class TestDataManipulationGreenRequests:
 
     def test_acl_block(self, uc2_network):
         """Test that green requests succeed when not blocked by ACLs but fail when blocked."""
-        net = uc2_network
+        net: Network = uc2_network
 
         router: Router = net.get_node_by_hostname("router_1")
         client_1: HostNode = net.get_node_by_hostname("client_1")