ATL-6669: Add pre-commit configuration

This commit adds a pre-commit hook that runs scalafmt and instructions
to configure it

README.md

@@ -117,6 +117,7 @@ In order to keep the code format consistent, we use scalafmt and git hooks, foll
    cs install scalafmt
    ```
 - `cp pre-commit .git/hooks/pre-commit`
+- `chmod +x .git/hooks/pre-commit`
 
 
 ## IDE / Editor support

pre-commit

@@ -0,0 +1,25 @@
+#!/bin/bash
+
+# Define the location of the scalafmt executable
+SCALAFMT="scalafmt"
+
+# Define the files you want to format
+FILES=$(git diff --cached --name-only --diff-filter=ACMR | grep '\.scala$')
+
+# Check if any Scala files are staged for commit
+if [ -n "$FILES" ]; then
+    echo "Running scalafmt on staged Scala files..."
+    # Run scalafmt on staged Scala files
+    $SCALAFMT --test --non-interactive $FILES
+
+    # Check if scalafmt made any changes
+    if [ $? -ne 0 ]; then
+        echo "Scalafmt found formatting issues. Aborting commit."
+        exit 1
+    fi
+
+    echo "Scalafmt formatting check passed."
+fi
+
+# If no Scala files are staged, exit without doing anything
+exit 0