chore: replaced `v2/flows` with `v2/stored_flows`

[viniarck]

Closes #14 Closes #9 Closes #8

Summary

• Replaced v2/flows with v2/stored_flows
• Added support to convert from actions to instructions to work as expected with v2/stored_flows
• Added more unit tests
• General refactorings
• Left TODOs in the code that will address on subsequent PRs

(this NApp changelog will only be updated in subsequent PRs)

Local Tests

I enabled and disabled INT using this topology, but only comparing the flows and not completely pushing it:

2023-08-02 16:44:42,856 - INFO [uvicorn.access] [httptools_impl.py:506:send] (MainThread) 127.0.0.1:47938 - "POST /api/kytos/telemetry_int/v1/evc/enable/ HTTP/1.1" 200
2023-08-02 16:44:48,219 - INFO [uvicorn.access] [httptools_impl.py:506:send] (MainThread) 127.0.0.1:55270 - "POST /api/kytos/telemetry_int/v1/evc/disable/ HTTP/1.1" 400
2023-08-02 16:44:54,941 - INFO [uvicorn.access] [httptools_impl.py:506:send] (MainThread) 127.0.0.1:47504 - "GET /api/kytos/mef_eline/v2/evc/c96aff17426546x HTTP/1.1" 404
2023-08-02 16:44:54,943 - INFO [uvicorn.access] [httptools_impl.py:506:send] (MainThread) 127.0.0.1:47494 - "POST /api/kytos/telemetry_int/v1/evc/disable/ HTTP/1.1" 404
2023-08-02 16:44:58,347 - INFO [uvicorn.access] [httptools_impl.py:506:send] (MainThread) 127.0.0.1:47516 - "GET /api/kytos/mef_eline/v2/evc/c96aff17426546 HTTP/1.1" 200
2023-08-02 16:44:58,365 - INFO [uvicorn.access] [httptools_impl.py:506:send] (MainThread) 127.0.0.1:47518 - "POST /api/kytos/mef_eline/v2/evc/c96aff17426546/metadata HTTP/1.1" 201
2023-08-02 16:44:58,367 - INFO [uvicorn.access] [httptools_impl.py:506:send] (MainThread) 127.0.0.1:47494 - "POST /api/kytos/telemetry_int/v1/evc/disable/ HTTP/1.1" 200
2023-08-02 16:44:59,570 - INFO [uvicorn.access] [httptools_impl.py:506:send] (MainThread) 127.0.0.1:47524 - "GET /api/kytos/mef_eline/v2/evc/c96aff17426546 HTTP/1.1" 200
2023-08-02 16:44:59,572 - INFO [uvicorn.access] [httptools_impl.py:506:send] (MainThread) 127.0.0.1:47494 - "POST /api/kytos/telemetry_int/v1/evc/disable/ HTTP/1.1" 400
2023-08-02 16:45:00,344 - INFO [uvicorn.access] [httptools_impl.py:506:send] (MainThread) 127.0.0.1:47528 - "GET /api/kytos/mef_eline/v2/evc/c96aff17426546 HTTP/1.1" 200
2023-08-02 16:45:00,345 - INFO [uvicorn.access] [httptools_impl.py:506:send] (MainThread) 127.0.0.1:47494 - "POST /api/kytos/telemetry_int/v1/evc/disable/ HTTP/1.1" 400

End-to-End Tests

N/A yet