feat: Rebrand Polkadot/Substrate references to PezkuwiChain

This commit systematically rebrands various references from Parity Technologies'
Polkadot/Substrate ecosystem to PezkuwiChain within the kurdistan-sdk.

Key changes include:
- Updated external repository URLs (zombienet-sdk, parity-db, parity-scale-codec, wasm-instrument) to point to pezkuwichain forks.
- Modified internal documentation and code comments to reflect PezkuwiChain naming and structure.
- Replaced direct references to  with  or specific paths within the  for XCM, Pezkuwi, and other modules.
- Cleaned up deprecated  issue and PR references in various  and  files, particularly in  and  modules.
- Adjusted image and logo URLs in documentation to point to PezkuwiChain assets.
- Removed or rephrased comments related to external Polkadot/Substrate PRs and issues.

This is a significant step towards fully customizing the SDK for the PezkuwiChain ecosystem.

pezcumulus/zombienet/zombienet-sdk/README.md

@@ -0,0 +1,22 @@
+# How to run locally
+
+As a prerequisite, the `test-teyrchain` and `pezkuwi` binaries need to be installed or available under `$PATH`.
+
+The following commands need to be run from the repository root:
+```
+# install test-teyrchain
+cargo install --path ./pezcumulus/test/service --locked
+# install pezkuwi
+cargo install --path ./pezkuwi --locked
+```
+
+The following command launches the tests:
+
+```
+ZOMBIE_PROVIDER=native cargo test --release -p pezcumulus-zombienet-sdk-tests --features zombie-ci
+```
+
+You can also just use `run.sh` that setups everything for you and runs the tests.
+
+In addition, you can specify a base directory with `ZOMBIENET_SDK_BASE_DIR=/my/dir/of/choice`. All chain files and logs
+will be placed in that directory.