feat: Vendor pezkuwi-subxt and pezkuwi-zombienet-sdk into monorepo

- Add pezkuwi-subxt crates to vendor/pezkuwi-subxt
- Add pezkuwi-zombienet-sdk crates to vendor/pezkuwi-zombienet-sdk
- Convert git dependencies to path dependencies
- Add vendor crates to workspace members
- Remove test/example crates from vendor (not needed for SDK)
- Fix feature propagation issues detected by zepter
- Fix workspace inheritance for internal dependencies
- All 606 crates now in workspace
- All 6919 internal dependency links verified correct
- No git dependencies remaining

vendor/pezkuwi-zombienet-sdk/crates/configuration/testing/snapshots/0000-small-network.toml

@@ -0,0 +1,25 @@
+[settings]
+timeout = 3600
+node_spawn_timeout = 600
+tear_down_on_failure = true
+
+[relaychain]
+chain = "rococo-local"
+default_command = "polkadot"
+default_image = "docker.io/parity/polkadot:latest"
+default_args = ["-lparachain=debug"]
+
+[[relaychain.nodes]]
+name = "alice"
+validator = true
+invulnerable = true
+bootnode = false
+balance = 2000000000000
+
+[[relaychain.nodes]]
+name = "bob"
+args = ["--database=paritydb-experimental"]
+validator = true
+invulnerable = false
+bootnode = true
+balance = 2000000000000