New git helper scripts 'mfadd' and 'mfqp'

- `mfadd` adds and fetches a user’s fork of Marlin
- `mfqp` invokes `git commit -m`, `mfrb`, `git push -f`

buildroot/share/git/mfqp

@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+#
+# mfqp
+#
+# Add all changed files, commit as "patch", do `mfrb` and `git push -f`
+#
+
+MFINFO=$(mfinfo) || exit
+IFS=' ' read -a INFO <<< "$MFINFO"
+
+case "$#" in
+  0 ) ;;
+  * ) echo "Usage: `basename $0`" 1>&2 ; exit 1 ;;
+esac
+
+git add * .travis.yml
+git commit -m "patch"
+mfrb
+git push -f