Creates cuttlefish instances

Environment canonical configuration. Structure: https://android.googlesource.com/device/google/cuttlefish/+/8bbd3b9cd815f756f332791d45c4f492b663e493/host/commands/cvd/parser/README.md Example: https://cs.android.com/android/platform/superproject/main/+/main:device/google/cuttlefish/host/cvd_test_configs/main_phone-main_watch.json;drc=b2e8f4f014abb7f9cb56c0ae199334aacb04542d NOTE: Using this as a black box for now as its content is unstable. Use the test configs pointed above as reference to build your config object.