Add ISEMS project to gallery

[amotl]

About

@elektra42 recently released the Operators manual for the OpenMPPT & OpenMPPT-HP solar controllers » Revision 21.12.22. Cheers!

What?

The Hiveeyes forum has a summary at ¹. It would be sweet to also have a corresponding page at the Kotori project gallery.

Footnotes

1. https://community.hiveeyes.org/t/diy-mppt-foss-und-oshw-solar-bleiakku-lader/427/14 ↩