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.

bizinikiwi/primitives/arithmetic/fuzzer/Cargo.toml

@@ -0,0 +1,48 @@
+[package]
+name = "pezsp-arithmetic-fuzzer"
+version = "2.0.0"
+authors.workspace = true
+edition.workspace = true
+license = "Apache-2.0"
+homepage.workspace = true
+repository.workspace = true
+description = "Fuzzer for fixed point arithmetic primitives."
+documentation = "https://docs.rs/pezsp-arithmetic-fuzzer"
+publish = false
+
+[lints]
+workspace = true
+
+[package.metadata.docs.rs]
+targets = ["x86_64-unknown-linux-gnu"]
+
+[[bin]]
+name = "biguint"
+path = "src/biguint.rs"
+
+[[bin]]
+name = "normalize"
+path = "src/normalize.rs"
+
+[[bin]]
+name = "per_thing_from_rational"
+path = "src/per_thing_from_rational.rs"
+
+[[bin]]
+name = "per_thing_mult_fraction"
+path = "src/per_thing_mult_fraction.rs"
+
+[[bin]]
+name = "multiply_by_rational_with_rounding"
+path = "src/multiply_by_rational_with_rounding.rs"
+
+[[bin]]
+name = "fixed_point"
+path = "src/fixed_point.rs"
+
+[dependencies]
+arbitrary = { workspace = true }
+fraction = { workspace = true }
+honggfuzz = { workspace = true }
+num-bigint = { workspace = true }
+pezsp-arithmetic = { workspace = true, default-features = true }