feat: add pre-commit and initial justfile

justfile

@@ -0,0 +1,20 @@
+[private]
+default:
+    @just --list
+
+# bump submodule(s) to latest tag
+bump-qmk submodule="":
+    #!/usr/bin/env bash
+    set -e
+    if [ -z "{{submodule}}" ]; then
+        targets="qmk_upstream qmk_framework"
+    else
+        targets="{{submodule}}"
+    fi
+    for sm in $targets; do
+        old=$(git -C $sm describe --tags --exact-match HEAD 2>/dev/null || git -C $sm rev-parse --short HEAD)
+        git -C $sm fetch --tags --quiet
+        new=$(git -C $sm tag --sort=-creatordate | head -1)
+        git -C $sm checkout --quiet "$new"
+        echo "bumped $sm from $old to $new"
+    done