Configured code formatting and update version of pre-commit hooks.

.pre-commit-config.yaml

@@ -1,7 +1,7 @@
 # See https://pre-commit.com for more information
 repos:
 -   repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v3.3.0
+    rev: v4.4.0
     hooks:
     -   id: trailing-whitespace
     -   id: end-of-file-fixer

gprMax.toml

@@ -2,3 +2,9 @@
 requires = ['setuptools', 'wheel', 'numpy>=1.19.0', 'Cython>=0.29.21',
             'jinja2']
 build-backend = "setuptools.build_meta"
+
+[tool.black]
+line-length = 120
+
+[tool.isort]
+profile = "black"