feat: add netx22-p4 workshop files

src/tests/netx22-p4/README.md

src/tests/netx22-p4/__init__.py

src/tests/netx22-p4/deploy_specs.sh

src/tests/netx22-p4/mininet/topo-simple.py

src/tests/netx22-p4/p4/bmv2.json

src/tests/netx22-p4/p4/main.p4

src/tests/netx22-p4/p4/p4info.txt

src/tests/netx22-p4/run_test_01_bootstrap.sh

src/tests/netx22-p4/run_test_02_create_service.sh

src/tests/netx22-p4/run_test_03_delete_service.sh

src/tests/netx22-p4/run_test_04_cleanup.sh

src/tests/netx22-p4/setup.sh

src/tests/netx22-p4/tests/.gitignore

src/tests/netx22-p4/tests/BuildDescriptors.py

src/tests/netx22-p4/tests/LoadDescriptors.py

src/tests/netx22-p4/tests/Objects.py

src/tests/netx22-p4/tests/__init__.py

src/tests/netx22-p4/tests/test_functional_bootstrap.py

src/tests/netx22-p4/tests/test_functional_cleanup.py

src/tests/netx22-p4/tests/test_functional_create_service.py