setup repo structure (& test system config)

.pre-commit-config.yaml

@@ -0,0 +1,20 @@
+---
+# See https://pre-commit.com for more information
+# See https://pre-commit.com/hooks.html for more hooks
+exclude: ^(.*.secret.*)$
+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v5.0.0
+    hooks:
+      - id: trailing-whitespace
+      - id: end-of-file-fixer
+      - id: check-added-large-files
+
+  - repo: local
+    hooks:
+      - id: run-format
+        name: run-format
+        language: syste
+        types: [ text ]
+        entry: "nix fmt"
+