Rebrand to Pezkuwichain Telemetry

- Rename PolkadotIcon to PezkuwiIcon
- Update pinned chains for Pezkuwichain
- Add pezkuwichain, bizinikiwi, pezkuwichain-js icons
- Update favicon with Pezkuwi branding
- Update package.json author to Dijital Kurdistan Tech Institute
- Update GitHub links to pezkuwichain/pezkuwi-telemetry
- Update backend Cargo.toml authors
- Rewrite README with Pezkuwichain documentation
- Add GitHub workflows (frontend-ci, backend-ci, docker, lock)

.github/workflows/backend-ci.yml

@@ -0,0 +1,91 @@
+name: Backend CI
+
+on:
+  push:
+    branches: [main, master]
+    paths:
+      - 'backend/**'
+      - '.github/workflows/backend-ci.yml'
+  pull_request:
+    branches: [main, master]
+    paths:
+      - 'backend/**'
+      - '.github/workflows/backend-ci.yml'
+  workflow_dispatch:
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  check:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: backend
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-action@stable
+        with:
+          components: rustfmt, clippy
+
+      - name: Cache cargo
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cargo/bin/
+            ~/.cargo/registry/index/
+            ~/.cargo/registry/cache/
+            ~/.cargo/git/db/
+            backend/target/
+          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+
+      - name: Check formatting
+        run: cargo fmt --all -- --check
+
+      - name: Clippy
+        run: cargo clippy --all-targets --all-features -- -D warnings
+
+      - name: Build
+        run: cargo build --release
+
+      - name: Run tests
+        run: cargo test --release
+
+  build-binaries:
+    runs-on: ubuntu-latest
+    needs: check
+    defaults:
+      run:
+        working-directory: backend
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-action@stable
+
+      - name: Cache cargo
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cargo/bin/
+            ~/.cargo/registry/index/
+            ~/.cargo/registry/cache/
+            ~/.cargo/git/db/
+            backend/target/
+          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+
+      - name: Build release binaries
+        run: cargo build --release
+
+      - name: Upload binaries
+        uses: actions/upload-artifact@v4
+        with:
+          name: backend-binaries
+          path: |
+            backend/target/release/telemetry_core
+            backend/target/release/telemetry_shard
+          retention-days: 7