Add 'mfhelp' script

Not all scripts answer --help yet. This will be added to 'mfinfo' soon.

buildroot/share/git/mfhelp

@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+#
+# mfhelp
+#
+
+cat <<THIS
+Marlin Firmware Commands:
+
+  firstpush ... Push and set-upstream the current branch to 'origin'
+  ghpc ........ Push the current branch to its upstream branch
+  ghtp ........ Set the transfer protolcol for all your remotes
+  mfadd ....... Fetch a remote branch from any Marlin fork
+  mfclean ..... Attempt to clean up merged and deleted branches
+  mfdoc ....... Build the website, serve locally, and browse
+  mffp ........ Push new commits directly to MarlinFirmware
+  mfinfo ...... Provide branch information (for the other scripts)
+  mfinit ...... Create an 'upstream' remote for 'MarlinFirmare'
+  mfnew ....... Create a new branch based on 'bugfix-...'
+  mfpr ........ Push the current branch and open the PR form
+  mfpub ....... Build and publish the marlinfw.org website
+  mfqp ........ Commit changes, do an interactive rebase, and push
+  mfrb ........ Interactively rebase the current branch on 'bugfix-...'
+  mftest ...... Run a platform test locally with PlatformIO
+  mfup ........ Fetch the latest 'upstream' and rebase on it
+
+  Enter [command] --help for more information.
+
+THIS