desktopd/jpm.sh: Hack SDK-based Firefox extensions without Node.js: Pure `/bin/sh` alternative to `jpm`

nord-stream 9630a3e1ca Fixed Emacs modelines		8 lat temu
..
src	61ae2e0ec6 Initial commit	8 lat temu
preferences.json	61ae2e0ec6 Initial commit	8 lat temu
translators.json	61ae2e0ec6 Initial commit	8 lat temu
version_info	9630a3e1ca Fixed Emacs modelines	8 lat temu