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
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jpm-build.sh	9630a3e1ca Fixed Emacs modelines	8 lat temu
jpm-optimize-signed-build.sh	9630a3e1ca Fixed Emacs modelines	8 lat temu
jpm-run.sh	9630a3e1ca Fixed Emacs modelines	8 lat temu