feat: Add pre-commit hooks for code formatting, linting

.pre-commit-config.yaml

@@ -0,0 +1,25 @@
+repos:
+  - repo: https://github.com/doublify/pre-commit-rust
+    rev: v1.0
+    hooks:
+      - id: fmt
+        name: Running "cargo fmt"
+        description: Format files with cargo fmt.
+      - id: clippy
+        name: Running "cargo clippy"
+        description: Lint rust sources
+
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.4.0
+    hooks:
+      - id: trailing-whitespace
+      - id: end-of-file-fixer
+      - id: check-yaml
+      - id: check-added-large-files
+
+  - repo: https://github.com/astral-sh/ruff-pre-commit
+    rev: v0.6.7
+    hooks:
+      - id: ruff
+        args: [--fix, --exit-non-zero-on-fix]
+      - id: ruff-format

DEVELOPMENT.md

@@ -5,3 +5,21 @@ You can use this command to clone the repository:
 ```
 ❯ git clone --recursive https://github.com/lablup/raftify.git
 ```
+
+If you already cloned it and forgot to initialize the submodules, execute the following command:
+
+```
+❯ git submodule update --init
+```
+
+# Development environment setup
+
+## precommit hook setup
+
+You can use pre-commit hooks with the following configuration.
+This commit hook performs checks like cargo fmt and cargo clippy before committing.
+
+```
+❯ pip install pre-commit --break-system-packages
+❯ pre-commit install
+```

raftify/src/raft_node/mod.rs

@@ -1147,6 +1147,7 @@ impl<
                 tx_msg
                     .send(LocalResponseMsg::GetRawNode {
                         raw_node: Arc::new(Mutex::new(unsafe {
+                            #[allow(clippy::missing_transmute_annotations)]
                             std::mem::transmute(&self.raw_node)
                         })),
                     })