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-subxt/signer/tests/no-std/Cargo.toml

@@ -0,0 +1,19 @@
+[package]
+name = "nostd-tests"
+version = "0.1.0"
+edition = "2021"
+publish = false
+
+[dev-dependencies]
+
+# This crate is not a part of the workspace, to ensure that no features
+# are enabled for it at the workspace level; which conflict with this test.
+subxt-signer = { path = "../../", default-features = false, features = [
+	"ecdsa",
+	"sr25519",
+	"unstable-eth",
+] }
+
+# this shouldn't be needed, it's in workspace.exclude, but still
+# I get the complaint unless I add it...
+[workspace]