feat: "aptpkg-auto-run" trailer for HEAD commit

To build files changed from provided commit hash before HEAD

aptpkg

@@ -123,6 +123,21 @@ change_autobuild_pkgs(){
 	commitid=$1
 	[ -n "$commitid" ] || commitid=HEAD
 
+	if [[ "$commitid" = HEAD ]]; then
+		before_run=$(git log HEAD^..HEAD | grep aptpkg-auto-run | sed 's#aptpkg-auto-run: ##' | sed 's#    ##')
+
+    	if [ -n "$before_run" ]; then
+    	    for m in $before_run; do
+				build_chg_pre=$(git diff-tree --no-commit-id --name-only -r "$m" | grep "build" | sed 's#/build##')
+				echo "Using $m with files $build_chg_pre"
+
+				for a in $build_chg_pre; do
+					aptpkg "$a"
+				done
+			done
+		fi
+	fi
+
 	build_chg=$(git diff-tree --no-commit-id --name-only -r $commitid | grep "build" | sed 's#/build##')
 	echo "Using $commitid with files $build_chg"