[requirements] add pytest, ruff to test requirements

requirements/test.in

@@ -0,0 +1,4 @@
+-r base.in
+
+pytest
+ruff

requirements/test.txt

@@ -0,0 +1,22 @@
+#
+# This file is autogenerated by pip-compile with Python 3.13
+# by the following command:
+#
+#    pip-compile requirements/test.in
+#
+asgiref==3.8.1
+    # via django
+django==5.1.3
+    # via -r /home/bronsen/Code/boost-your-django-dx/requirements/base.in
+iniconfig==2.0.0
+    # via pytest
+packaging==24.2
+    # via pytest
+pluggy==1.5.0
+    # via pytest
+pytest==8.3.3
+    # via -r requirements/test.in
+ruff==0.7.4
+    # via -r requirements/test.in
+sqlparse==0.5.2
+    # via django