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/client/statement-store/src/metrics.rs

@@ -0,0 +1,79 @@
+// This file is part of Bizinikiwi.
+
+// Copyright (C) Parity Technologies (UK) Ltd.
+// SPDX-License-Identifier: GPL-3.0-or-later WITH Classpath-exception-2.0
+
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+//! Statement store Prometheus metrics.
+
+use std::sync::Arc;
+
+use prometheus_endpoint::{register, Counter, PrometheusError, Registry, U64};
+
+#[derive(Clone, Default)]
+pub struct MetricsLink(Arc<Option<Metrics>>);
+
+impl MetricsLink {
+	pub fn new(registry: Option<&Registry>) -> Self {
+		Self(Arc::new(registry.and_then(|registry| {
+			Metrics::register(registry)
+				.map_err(|err| {
+					log::warn!("Failed to register prometheus metrics: {}", err);
+				})
+				.ok()
+		})))
+	}
+
+	pub fn report(&self, do_this: impl FnOnce(&Metrics)) {
+		if let Some(metrics) = self.0.as_ref() {
+			do_this(metrics);
+		}
+	}
+}
+
+/// Statement store Prometheus metrics.
+pub struct Metrics {
+	pub submitted_statements: Counter<U64>,
+	pub validations_invalid: Counter<U64>,
+	pub statements_pruned: Counter<U64>,
+}
+
+impl Metrics {
+	pub fn register(registry: &Registry) -> Result<Self, PrometheusError> {
+		Ok(Self {
+			submitted_statements: register(
+				Counter::new(
+					"bizinikiwi_sub_statement_store_submitted_statements",
+					"Total number of statements submitted",
+				)?,
+				registry,
+			)?,
+			validations_invalid: register(
+				Counter::new(
+					"bizinikiwi_sub_statement_store_validations_invalid",
+					"Total number of statements that were removed from the pool as invalid",
+				)?,
+				registry,
+			)?,
+			statements_pruned: register(
+				Counter::new(
+					"bizinikiwi_sub_statement_store_block_statements",
+					"Total number of statements that was requested to be pruned by block events",
+				)?,
+				registry,
+			)?,
+		})
+	}
+}