Merged PR 458: Carry over airspace hotfixes from internal

## Summary
Carried over hit fixes from internal that backtracked on the complex channel width stuff for now and focussed on getting a stable data rate baked in for each frequency.  Implemented overriding of frequency max capacities on the airspace. updated documentation to reflect the changes in airspace.py.

## Test process
- Original tests still work
- Tested reading the frequency capacity overrides from config file
- Tested that setting the frequency override to 0.0 blocks the channel

## 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: #2745

src/primaite/game/game.py

@@ -17,7 +17,7 @@ from primaite.game.agent.scripted_agents.random_agent import PeriodicAgent
 from primaite.game.agent.scripted_agents.tap001 import TAP001
 from primaite.game.science import graph_has_cycle, topological_sort
 from primaite.simulator import SIM_OUTPUT
-from primaite.simulator.network.airspace import AirspaceEnvironmentType
+from primaite.simulator.network.airspace import AirSpaceFrequency
 from primaite.simulator.network.hardware.base import NodeOperatingState
 from primaite.simulator.network.hardware.nodes.host.computer import Computer
 from primaite.simulator.network.hardware.nodes.host.host_node import NIC
@@ -256,10 +256,11 @@ class PrimaiteGame:
         simulation_config = cfg.get("simulation", {})
         network_config = simulation_config.get("network", {})
         airspace_cfg = network_config.get("airspace", {})
-        airspace_environment_type_str = airspace_cfg.get("airspace_environment_type", "urban")
+        frequency_max_capacity_mbps_cfg = airspace_cfg.get("frequency_max_capacity_mbps", {})
 
-        airspace_environment_type: AirspaceEnvironmentType = AirspaceEnvironmentType(airspace_environment_type_str)
-        net.airspace.airspace_environment_type = airspace_environment_type
+        frequency_max_capacity_mbps_cfg = {AirSpaceFrequency[k]: v for k, v in frequency_max_capacity_mbps_cfg.items()}
+
+        net.airspace.frequency_max_capacity_mbps_ = frequency_max_capacity_mbps_cfg
 
         nodes_cfg = network_config.get("nodes", [])
         links_cfg = network_config.get("links", [])