feat(network_prov): Change the proto file to make the network_provisioning stay backward compatible with wifi_provisioning (IEC-125)

[wqx6]

Checklist

• [X] Component contains License
• [X] Component contains README.md
• [X] Component contains idf_component.yml file with url field defined
• [X] Component was added to upload job
• [X] Component was added to build job
• [x] CI passing

Change description

Change the protobuf files so that the network_provisioning component will stay backward compatible with wifi_provisioning

Test

• Provision thread_prov&wifi_prov examples in this component and wifi_prov_mgr example in ESP-IDF using esp_prov.py script in this component. (So phone Apps using the proto files in this component can provision previous firmware using wifi_provisioning)
• Provision wifi_prov example in this component and wifi_prov_mgr example in ESP-IDF using esp_prov.py script in ESP-IDF (So phone Apps using proto files in wifi_provisioning component can provision wifi firmware using network_provisioning)