## Summary
This PR is the base implementation of the Terminal Service Class, containing the skeleton structure for #2711.
## Test process
Future me's problem - see #2714
## 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
- [X] updated the **change log**
- [X] ran **pre-commit** checks for code style
- [ ] attended to any **TO-DOs** left in the code
Related work items: #2711
Feedback Issues left:
1.Issues with red-agent image not embeded correctly in data_manipulation_e2e notebook
2._autosummary/tests.unit_tests.html is still completely blank.
3. _index.html is not updated with new 2-pager
4. _dependencies is not updated to just include tier-1 and primary for v3.
5. definiton of user_app_home is not confirmed
## Summary
This PR removes the hardcoding of Link bandwidth, and makes it possible to be configured via the network yaml definitions.
Link bandwidth will still default to 100 if this is not present, to prevent breaking all previous defined networks.
## Test process
All tests continue to pass.
`basic_network_config.yaml` now provides a non-default link bandwidth which is confirmed within unit 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
- [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
- [] 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: #2457
## Summary
Built three networks, one is the minimal network, one is a basic LAN, and another is a nice beefy multi-LAN setup with ISP and DNS along with applications, services. Documented the process when building the config files. Included the config files as example configs for use.
## Test process
Tested the shit out of the big multi-lan network.
## Checklist
- [ ] PR is linked to a **work item**
- [ ] **acceptance criteria** of linked ticket are met
- [ ] 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**
- [ ] ran **pre-commit** checks for code style
- [ ] attended to any **TO-DOs** left in the code
Related work items: #2266
