Add pre-commit configuration file

Introduce a pre-commit-config.yaml to automate code quality checks and enforce best practices. Includes hooks for file validation, formatting, and commit message standardization, as well as Java-specific quality tools. This ensures consistent coding standards and reduces manual errors.

pre-commit-config.yaml

@@ -0,0 +1,36 @@
+repos:
+
+  # pre-commit hooks
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: "v5.0.0"
+    hooks:
+      - id: check-added-large-files
+      - id: no-commit-to-branch
+      - id: check-toml
+      - id: check-yaml
+      - id: check-json
+      - id: check-xml
+      - id: end-of-file-fixer
+        exclude: \.json$
+        files: \.py$
+      - id: trailing-whitespace
+      - id: mixed-line-ending
+
+  # for commit message formatting
+  - repo: https://github.com/commitizen-tools/commitizen
+    rev: v4.1.1
+    hooks:
+      - id: commitizen
+        stages: [commit-msg]
+
+  # for java code quality
+  - repo: https://github.com/gherynos/pre-commit-java
+    rev: v0.2.1
+    hooks:
+      - id: pmd
+        exclude: /test/
+      - id: cpd
+        exclude: /test/
+      - id: checkstyle
+        exclude: /test/
+      # ...