Added ruff settings and pre-commit hook (#33)

Solves #32 
Ruff does the following now:

- Limits lines to 88 characters
- Formats code with double quotes
- Uses LF (\n) line endings
- Enforces 4-space indentation
- Formats code blocks inside docstrings

I also added a pre-commit hook to automatically format the code
according to Ruff's rules

Author: satvshr

.pre-commit-config.yaml

@@ -0,0 +1,7 @@
+repos:
+  - repo: https://github.com/astral-sh/ruff-pre-commit
+    rev: v0.11.0
+    hooks:
+      - id: ruff-format
+      - id: ruff
+        args: [--fix]

pyproject.toml

@@ -19,6 +19,21 @@ dependencies = [
 [project.optional-dependencies]
 dev = [
     "ruff>=0.12.0",
-    "black>=25.0",
-    "pytest>=8.0.0"
+    "pytest>=8.0.0",
+    "pre-commit"
 ]
+
+[tool.ruff]
+line-length = 88
+target-version = "py310"  # Match your `>=3.10` requirement
+
+# Choose what to check for
+select = ["E", "F", "B", "I", "UP", "N", "C4"]
+
+exclude = ["__pycache__", ".venv", "build", "dist", ".git"]
+
+[tool.ruff.format]
+quote-style = "double"
+line-ending = "lf"
+indent-style = "space"
+docstring-code-format = true